# college algebra

1.build the fraction x+5/x+3 to an equivalent fraction whoes denominator is x^2-x-12

2. add and simplify: x/x+2 +4x-3/x^2-4

1. 👍 0
2. 👎 0
3. 👁 126
1. since x^2-x-12 = (x-4)(x+3), just multiply top and bottom by (x-4)

x/(x+2) + (4x-3) / (x+2)(x-2)
requires a common denominator of (x+2)(x-2). So, just multiply the first term top and bottom by (x-2) and then just add the numerators.

1. 👍 0
2. 👎 0
posted by Steve

## Similar Questions

1. ### college algebra

1. divide and simplify x^2+x-56/x^1-1 / x-7/2x+2 2. find the product in simplest from for x^2+x-6/2x^2-x-3 * x^7-2x^6+4x^5/x^4+8x 3. perform the indicated operations and simplify: 2/3x +4/3x^2 y^4 -6/2x^4 y^5 4. perform the

asked by ashley on September 1, 2014
2. ### college algebra

question 1: build the fraction x+5/x+3 to an equivalent fraction whoes denominator is x^2 question 2: simplify (x^2+6x+9)(3-x)/(x-3)(2x+6) question 3. find the product in simplest from x^3-9x/x^5+27x^2 * x^2-3x+9/x^2+3x

asked by ashley on September 2, 2014

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.

asked by vince on March 8, 2007
4. ### Computer science

1.Fraction that has a numerator and a denominator. The class should have methods that can: (a) add and subtract two Fractions together and return the resulting Fraction, (b) create a duplicate of itself and return the duplicate,

asked by Sarah N on May 28, 2010
5. ### Math

If you add the denominator to both the numerator and denominator of a fraction, you get a new fraction that sometimes is larger than the original fraction. Find a fraction where the new fraction is four times as large as the

asked by Liana on March 2, 2018
6. ### math

i need some to explain how to turn 1.05 into a fraction Do you know how to add fractions? 1 + 0.05 equals 1.05. So if you can convert 1 to a fraction and 0.05 to a fraction, you can add the two fractions together. Your answer is

asked by Tammy Evert on July 19, 2006
7. ### 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

asked by mm on September 23, 2016
8. ### math

what is an eay way to add 1/5 1/2 and 1/7. I have to find a number that they all go into for a similar denominator right? but how do I do that without taking forever. Multiply the denominators: 5 x 2 x 7 = ?? =) As Writeacher has

asked by I dunno on July 28, 2007
9. ### 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

asked by Jannie on November 13, 2010
10. ### maths

The denominator of a fraction is 3 more than the numerator .if 5 added to both parts the resulting fraction is equivalent 4/5 .Find the fraction.

asked by Anonymous on July 19, 2016

More Similar Questions