Saturday

April 18, 2015

April 18, 2015

Posted by **Maryam :)** on Tuesday, October 23, 2012 at 8:52am.

what is n?

2/3-6h=-13/6

what is h?

write as a equation,then solve.

the quotient of a number and 2, minus 9, is 14

a number decreased by 7 and then divided by 5 is 13

the sum of 15 and 7 times a number is 99

- Math -
**Reiny**, Tuesday, October 23, 2012 at 9:58amI assume you are just learning this basic algebra.

The general concept in solving equations is this:

"Whatever you do (arithmetic operation) to one side, you must do to the other side.

In general, the object is to get all the variable terms to one side, and the constants to the other side.

40 - 3n = -23

subtract 40 from both sides and simplify

40 - 3n - 40 = -23 - 40

-3n = -63

divide both sides by -3

-3n/-3 = -63/-3

n = 21

2/3 - 6h = -13/6

often it is a good idea to get rid of fractions.

the LCD of all the terms is 6, so multiply each term by 6

(2/3)(6) - 6h(6) = (-13/6)(6)

4 - 36h = -13 , ahhh, no more fractions

4 - 36h - 4 = -13 - 4

-36h = -17

divide by -36

h = 17/36

To change a "word problem sentence " into an equation , just translate it

I will do the second of your questions.

"a number decreased by 7 and then divided by 5 is 13 "

let the number be x

(x - 7)/5 = 13 , notice I just translated the English into Math

multiply both sides by 5

x-7 = 65

add 7 to both sides

x = 72

check:

subtract 7 form 72 ---> 65

divide that by 5 ---> 13

YEahhh!

try the others the same way,

(check your answer by following the wording of the problem. That way you are sure you have the right answer.)

**Answer this Question**

**Related Questions**

6th grade math - Can you check these problems, please? Translate each phrase ...

algebra - Please check A number m decreases by 4 m-4 A number d divided by k,...

Math- urgent - One more than 3 times a number is the same as 5 times the number...

algebra - Please check A number p divided by 7 p/7 9 times a number a 9xa 6 ...

Math - Write the word sentence as an equation. The product of a number m and 2 ...

Algebra 1 - Two fewer than a number doubled is the same as the number decreased ...

Math 8R: Homework Check - Part 4 - Part 4: Translate and solve: 25. 6 less than ...

Math - A number divided by 14 is 6. Find the number. Use a let statement. Write ...

math - write the verbal sentence as an equation.then solve the equation Three ...

Math - Are these correct? two more than a number and four = 2 + n + 4 ten more ...