-90+7x=135-8x

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Solution for -90+7x=135-8x equation: 



-90+7x=135-8x

We move all terms to the left:

-90+7x-(135-8x)=0

We add all the numbers together, and all the variables

7x-(-8x+135)-90=0

We get rid of parentheses

7x+8x-135-90=0

We add all the numbers together, and all the variables

15x-225=0

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

15x=225

x=225/15

x=15

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