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Find the lowest common denominator of 3/4 and 5/8

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algebra
least common denominator for these two rational expressions. ( / stands for fraction bar and the ^ means it's squared. i don't understand these at all. a/ a^2-36 2a/a^2+5a-6

Math
1)let k and w be two consecutive integers such that k<x<w. If log base 7 of 143 = x, find the value of k+w 2) if 7 and -1 are two of the solutiosn for x in the equation 2x^3 +kx^2 -44x+w=0, find the value of k+w 3) from an ordinary deck of 52 cards, two cards are ...

help
The interest rate on a second mortgage was5 7/8 % last month. This month the interest rate is 7 3/2 %. How many percentage points has the interest rate increased? Are you sure you mean 7 3/2% ? No lender would write an intereest rate that way. Perhaps you typed a numerator or ...

Math
Rationalize the denominator and write your answer in lowest terms (2 √ 6 + √ 3)/ ( √ 6- √ 3)

math
The numerator of a fractionis 5 less than twice the denominator. If the numerator is decreased by 1 and the denominator is increased by 3, the value of the new fraction is 5/4. Find the original fraction.

Algebra
What number must be added to both the numerator and denominator by 3. If 3 is added to the numberator and 9 is subtracted from the denominator, the new fraction is equal to 3/2. Find the original fraction.

Math
The denominator of a fraction is four more than twice the numerator. If both numerator and denominator are increased by six, the simplified result is 7/13. Find the original fraction

algebra 2
Find the LCD for the following pairs of rational expressions. numerator 8 divided by denominator x negative 13 and numerator 7 divided by denominator x plus 15

Maths
denominator of a fraction is 1 more than its numerator. the fraction reduces to one fourth when numerator is reduced by 2 and denominator is increased by 3. find the number

algebra
The denominator of a fraction is 2 more than the numerator.If 1 is subtracted from both numerator and denominator,the result in fraction has value of 1/2.Find the original faction.

maths
The denominator of rational number is GreaTer than it numerator by 7.if 3subtracted to numerator and 2added to denominator the newnumber become 1/5 find the origina number .

algebra
The denominator of a fraction is 3 more than twice the numerator. If both the numerator and denominator are decreased by 7 and the simplified result is 7/19 find the original fraction

precal help
The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

precal help
The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

algerbra 2
B. The rational expression is not defined for any values of 20^2-180/4x^2+36+ 72 for which the denominator equals zero. Find the value(s) of for which the denominator equals zero.

le
a fraction is such that the numerator is seven less than the square of the denominator. if six is added to the numerator and on to the denominator the result is 2. Find the fraction

Maths
Find the denominator n of the rational number kn (k,n are both integers) such that ∣Root 2 - k/n∣ is the smallest possible, out of all rational numbers with denominator less than 1000?

KUAI HELP!
4/75, 2r/25, r/125 -1/x, 2/xy, x/y 1/a, 1/b write fractions as equivalent fractions with the least common denominator

math
how to use a common denominator to write an equivalent fraction for each fraction?

maths
the denominator of a fraction is two more than the numerator.when we decrease the numerator by1 and increase the denominator by 3,we get 1/4.find the fraction

math
Find a fraction which reduces to 2/3 when 3 is adding to both its numerator and denominator and reduces to 3/5 when 1 is added to both its numreator and denominator

kishore
if 1 is added to the numerator and 3 to the denominator of a fraction it becomes 1/2 if 1 is subtracted from the numenator and 2 is added to the denominator it becomes 2/5 find the fractions

LCD
I need a reveiw on how to use the LCD least common denominator to add and subtract

5th grade math
rewrite each pair of fractions as equivalent fractions with a common denominator? 2/3, 3/4

Algebra
2 divided by 5w+ 10, minus 3 divided by2w-4 2/(5w +10) - 3/(2w-4) ? That can be rewritten with a common denominator. (2/5)/(w+2) - (3/2)/(w-2) = [(2/5)(w-2) - (3/2)(w+2)]/(w^2-1) = [(-11/10)w - (19/5)]/(w^2-1) But it doesn't look any simpler that way.

Math
How do you subract the fraction 2/5 and 4/9? Form a common denominator and subtract the numerators, like this: 20/45 - 18/45 = (20-18)/45 = ? I assume you wanted 2/5 subtracted from 4/9, not the other way around. If you want 2/5 - 4/9, the sign changes.

Physics
Problem 3- A 40 kg child swings in a swing supported by two ropes, each 3 m long. (a) If the tension in each rope at the lowest point is 350 N, a. find the child's speed at the lowest point. b. the force exerted by the seat on the child at the lowest point. (Neglect the mass ...

maths
how do i solve this equation? 2/(x+1)=1/(x-1) - (1/(2x-1)) thx Get a common denominator (x+1)(x-1)(2x-1) then, each term, multipy it out. Gather terms, solve.

Maths
The numerator of a is 5 less than the denominator. If 1 is added to both the numerator and the denominator the fraction would be 2/3. Find the fraction

Math 111 (College Algebra)
Rational number or irrational? And why? I have been challenged in my college algebra class to determine whether or not .12122122212222122221222221... (continuing forever)is a rational number or not. I need to prove one way or the other. I am lost! :-( I know that rational ...

algebra
w10y12z _______ w6z5 Are those exponents like [(w^10)*(y^12)*z]/[(w^6)*(z^5)]? If so then you should have some rules telling you how to simplify ratios of expressions. If the exponent of the numerator's term is greater than the term's exponent in the denominator, then subtract...

math
paul spends 2/3 of an hour exercising and 1/2 hour practicing the piano each day what is the least common denominator of these fractions?.

math
the numerical expression for 7/8-3/4(2-1/6)-2/3 is equal to I made a common denominator of 24 21/24-1&+12/24+3/24-16/24 -15/24+3/24-16/24 -12/24-16/24 -28/24 both are divible by 2 -14/12 & divide both by 2 again to get -7/6 Is this correct? Thank you

Math
The product of my numerator and my denominator is divisible by 2 .my denominator and my numerator differ by 3. My numerator is an even number .my denominator is a prime number.I am:______

math help
How do you figure out a related sentence for fractions? (here is the problem) t + 1/8= 3/5 multipy the 1/8 by 5/5 or it is 5/40 Then, mulipy the 3/5 by 8/8 to 24/40 Finally subtract 5/40 from both sides. Think out why it is done this way. What do you mean by a "related ...

rs aggarwal math class 8 chapter 8 soluation
in a fraction twince the numerator is 2 more than the denominator . if 3 is added to the numerator and to the denominator , the new fraction is 2/3 . find the original fraction.

Math
The denominator of a fraction exceeds the numerator by 7. If 3 is added to the numerator and 1 is subtracted from the denominator, the resulting fraction is equal to 4/5 . Find the original fraction. PLZ SHOW ALL WORK AND HURRY!!!

Math
Add or subtract the following rational expressions. Be sure to look for factors before trying to determine a common denominator, and simplify your answers, if possible. 16x-12/4x^2+5x-6-3/x+2

math
what is the greater common factor of 6/12 need all divisible numbers for both and put in lowest form as a fraction

Math
This is a fill in the blanks. The lowest common multiple is the ________ number the given numbers divide into evenly

maths
the numerator and denominator of a fraction are in the ratio 3:2 if 3 is added to the numerator and 2 is subtracted from the denominator a new fraction is formed whose value is 9/4 find the original fraction?

Algebra
The numerator and the denominator of a fraction are in a ratio 3:2.If 3 is added to the numerator and 2 is subtracted from the denominator,a new fraction is formed whose value is 9/4 . Find the original fraction.

Math help plz ASAP.
Rationalize each denominator. 6 + square root of 2 ____________________________ square root of 3 PLZ HELP..dont kno how to do this question.plz explain..thanks You have (6 + sqrt(2))/sqrt(3) multiply that by sqrt(3)/sqrt(3) to get [(6 + sqrt(2))*sqrt(3)]/3 and simplify To ...

maths
These questions concern the integers 84, 126, 168 and 294. 1)Choose the option that is the lowest common multiple of the four integers. 2)Choose the option that is the highest common factor of the four integers. Options for them: A) 28 B) 42 C) 63 D) 294 E) 3528 F) 7056 G 10) ...

Math
The numerator of a fraction is two less than its denominator. When both numerator and denominator are increased by 3, the fraction is incre ased by 3/20. Find the original fraction. Pls include solution and workings thx :)

math 116
Is it always necessary to have a common denominator to add and subtract fractions? Why? What about multiplication and division with fractions?

Algebra 1
Solve the equation by multiplying each side by the least common denominator. 2/h-2 + 4/h+1 = 0 I know the answer is 5, but I do not know how to solve the problem. Please explain further.

Math - Maxima and Minima
The height, h, in metres, of a ski ramp over a horizonatal distance, x, in metres, is given by h(x)=0.01x^3-0.3x^2+60 for the interval 0 less than or equal to x less than or equal to 22. a) Find the vertical drop from the top of the ramp to the lowest point on the ramp. b) ...

algebra
The denominator of a fraction is 12 more than the numerator. If 16 is added to the numerator and 16 is subtracted from the denominator, the value of the resulting fraction is equal to 2/1. Find the original fraction

algebra
The numerator of a fraction is 7 less than the denominator if three is added to the numerator and 9 is subtracted from the denominator the new fraction is equal to 3/2. Find the original fraction.

Math
The denominator of a fraction is one more then the numerator. If 2 were added to both the numerator and denominator, the new fraction equals 4/5. Find the original fraction.

math
the difference between the numerator and denominator of a fraction is 5. if 5 is added to its denominator then the fraction is decreased by one of its one fourth 1(1/4). find the value of fraction

math
the denominator of a rational number is greater than its numerator BY 7 if the numerator is increased by 17 and the denominator is deacreased by 6 the new number becomes 2 find the orginal number

math
the numerator of a fraction is 3 less than the denominator. if 4 us added to the numerator and to the denominator, the resulting fraction is equivalent to 3/4. find the original fraction. Show your solution

Mathematics
Find a fraction which reduces to 3/4 when the numerator and denominator are each decreased by 1, and which reduces to 4/5 when the numerator and denominator are each increased by 1.

Mathematics
Find a fraction which reduces to 3/4 when the numerator and denominator are each decreased by 1, and which reduces to 4/5 when the numerator and denominator are each increased by 1.

maths
Find a fraction which reduce to 2/3 if the numerator and the denominator are each increased by 1 and reduce to 3/5 if the numerator and the denominator are each reduced by 2

Calculus II
So I'm trying to integrate a function using partial fractions. Here is the integral of interest: ∫(3x^2+5x+3)/[(x+2)(x^2+1)]dx. Since the numerator's degree of the polynomial is lesser than that of the denominator's degree, it is clear to separate. However, once I ...

math
Find the least common denominator for fractions with the given denominators of 6, 8 and 10. Explain also what the LCM for these numbers would be. (c).The average person drinks about 3 1/5 cups of coffee per day. If a person works 5 days a week for 50 weeks a year. Find how ...

Maths
The first term of an AP is 12 and that of a GP is 6. The common difference and the common ratio are equal, so as are the sum of the fist 3 terms. Find the possible values of the common difference?

Algebra
The numerator of a fraction exceeds the denominator. If 3 is added to the numerator and 9 is subtracted from the denominator, the new fraction is equal to 5/2. Find the original fraction.

Maths
The numerator and denominator of a fraction are in ratio 5 :2, if 5 is added to the numerator and 2 is subtracted from the denominator a new fraction 15 4 is formed. Find the original fraction.

Maths
The numerator and denominator of a fraction are in ratio 5 : 2, if 5 is added to the numerator and 2 is subtracted from the denominator a new fraction ยน/4 is formed.Find the original fraction.

physics
The length of the auditory canal in humans averages about 2.5 cm. What is the second lowest standing wave frequency for a pipe of this length open at one end? Use 345 m/s for the speed of sound. I know that 4L=lambda, so lambda= 10cm. I know that f=v/lambda, so f=3450 Hz. But ...

Math
3 2 ----- - ------ 2a -2 1 - a 5 3 ----- - ------ 2x - 4 2 - x need a little understanding on these anyone? I don't understand the second term. Is it this? 3 2 ----- - ------ = 2a -2 1 - a 3 2 ----- - ------ = 2(a -1) 1 - a 3 2 ----- - ------ = 2(a -1) -( a-1) 3 2 3/2 +2...

math
Find a fraction that reduces to 3/4 when both the numerator and denominator are decreased by i, and reduces to 4/5 when both the numerator and denominator are each increased by 1. I know the answer is 7/9, but i don't know how to solve (i must use a system of equations).

math
the numerator of a fraction is 3 less than the denominator. if 4 us added to the numerator and to the denominator, the resulting fraction is equivalent to 3/4. find the original fraction

math
if there are 30 students in a class and 39 candys in a pack how many packs of candy do you have to buy so that there will be no left overs (hint us lowest common mutilple

Limits-Rationalizing
lim x->1 (1-(1/x^3))/ (1-(1/x^2)) I keep seeming to get a denominator of zero when I rationalized the denominator.

math,algebra
how do you solve this problem 3 and 1/3 subtracted by 1 and 2/3? Change the mixed number back to fractions with a common denominator. That would give you 5/3 subtracted from 10/3. How many thirds are left?

algebra
simplify. assume no denominator is eual to zero. -10m-1y0r(numerator) -14m-7y-3r-4(denominator)

algebra help!!!!
Add: b^−3 ca^−1 −xc^−2 how would i do this ? Let me make sure I have the question right. We have b^(−3) ca(^−1) −xc^(−2 )=? You might also write this as (1/b^3) c(1/a) − x(1/c)= c/(a*b^3) - x/c=? If this is correct, then ...

Algebra 2
The Denominator of a fraction exceeds the numerator by 4. When 3 is added to both the numerator and denominator, the fraction becomes 4/5. Find the fraction.

algebra
the numerator of a fraction is 5 less than the denominator.if 1 is added to both the numerator and the denominator the fraction becomes 2/3. find the fraction

Maths
The numerator of a fraction is 2 less than its denominator. If 3 is substracted from the numerator and from the denominator, the new fraction obtainded is 3/4. Find the fraction

Maths
The numerator of a fraction is 7 less than the denominator. If the numerator is increased by 2 and the denominator by 9,we again get the same fraction. Find the fraction.

Algebra
In a certain positive fraction \frac{a}{b} , the numerator is 2 less than the denominator. If the numerator and denominator are interchanged, the fraction is increased by 1 \frac{1}{15} . Find a + b .

Basic Math
A student claims that 2/3 = 6/7 because if you add 4 to both the top and the bottom of a fraction, the fraction does not change. How do you respond? I am a bit confused. Don't you need to have a common denominator?

MATH
HOW DO LEAST COMMON MULTIPLES WORK. IT SAYS THERE IS A PROBLEM TO SOLVE BUT MY MOM AND I CAN'T FIND IT. THEY CIRCLED BOTH 2'S AND 3'S. The least common multiple of 2 and 3 is six. The least common multiple of 12 and 6 is 12. # noun: the smallest multiple that is exactly ...

Algebra
-9+3w/11 divided by 25w-75/121 Do I need a Common denominator? Would it be 121 as 11x11 is 121? Do I then multiply the numeratos- -9+3w by 11 or do I do the addition of -9+3w for-12w?

Maths
The hcf of 140 and x is 20. The lowest common multiple of 140 and x is 20. What is the value of x? Thank you.

basic algebra
the numerator of a certain fraction is four less then the denominator, if the numerator is doubled and the denominator is diminished by two, the sum of the original fraction and the new one is three. find the original fraction

physics
calculate the speed of the pendulum at its lowest point if its PE is 5J at its heighest point and has a total mass of 1kg. 5 Joules = (1/2) M V^2 at lowest point. Solve that equation for V at lowest point.

Math
Write each of the following as a common fraction or mixed number. Write your answer in lowest term 15.35

math
Write the following as a common fraction or a mixed number. Write your answer in lowest terms. 0.44

math
Write the following as a common fraction or mixed number. Write your answer in lowest terms. 0.44

Math
The lowest common multiple of two numbers is 36, one number is 12, what might the other number be?

Maths
When the numerator and denominator of a fraction are each increased by 5, the value of the fraction becomes 3/5 When the numerator and denominator of that same fraction are each decreased by 5, the fraction is then 1/5 Find the original fraction. (Hint: Let the fraction be p/q...

Math
Chester and Kelsey were given a box of candy to sell. Each box of candy had 24 individual packages inside. Chester sold 1/4 of the candy in the box and Kelsey sold 3/8 of the candy in the box. Which of the following describes how to find the total number of packages That ...

maths
the numerator and denominator of a fraction are in the ratio 3:2 if three is added to the numerator and three is subtracted from the denominator a new fraction is formed whose value is 9/4 find the original fraction?

Algebra--One Quick Question
31. Determine whether the sequence 7, 21, 35, 49 is geometric. If so, find its common ratio. a. no b. yes, common ratio of 14 c. yes, common ratio of 12 B? Thanks -MC

Math / Fractions
I have 3 mixed fractions 2 1/4 , 1 1/2 , 3 5/8 Now I already turned them into improper fractions. 9/4 , 3/2 , 29/8 But I'm a little confused on how to get the common denominator.. Is it 8? or do I multiply their factors?

6th grade math
I still do not understand this problem? find a number such that when added to the numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks If you add 7 to the numerator and 7 to the denominator you get 9/18. 9/18= 9x1/9x2 = 1/2 It means add the same number...

Math
Jack says that once you have a common denominator you are ready to subtract two mixed numbers. What other step might be necessary before you can subtract? Give an example.

Math
Prove that (xt+yr)/yt is already in lowest terms, b and d have no common prime factor. Note that x/y and r/t are fractions in reduced terms.

Mathematics
The numerator of a fraction is two less than its denominator. When both numerator and denominator are increased by 3, the fraction is increased by 3/20. Find the original fraction. Explain your solution

St.george high school
The numerator of a fraction is 8 less than the denominator.when 6 is added to the numerator and 10 is added to the denominator,the value of the fraction is unchanged.find the original fraction.

algebra
The denominator of a fraction is 4 less than the numerator .If the denominator is doubled and the numerator is increased by 6,the sum of the original fraction and the new one is 3 .Find the original fraction.

math
write the pair of the fractions as a pair of fractions with a common denominator : a.) 2/4 and 7/8. b.) 3/10 and 1/2. my answer for the a.) is 16/32-28/32. for b.) is 6/20-10/20 please let me know is my answers is right or not

math
I need help on how to use a common denominator to write an equivalent fraction for each fraction?number 1 is 1/2,1/3 and number 2 is 7/8,3/10 please help

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