7x+8x-72=120-9x

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Solution for 7x+8x-72=120-9x equation: 



7x+8x-72=120-9x

We move all terms to the left:

7x+8x-72-(120-9x)=0

We add all the numbers together, and all the variables

7x+8x-(-9x+120)-72=0

We add all the numbers together, and all the variables

15x-(-9x+120)-72=0

We get rid of parentheses

15x+9x-120-72=0

We add all the numbers together, and all the variables

24x-192=0

We move all terms containing x to the left, all other terms to the right

24x=192

x=192/24

x=8

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