-90-7x=75-12x

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Solution for -90-7x=75-12x equation: 



-90-7x=75-12x

We move all terms to the left:

-90-7x-(75-12x)=0

We add all the numbers together, and all the variables

-7x-(-12x+75)-90=0

We get rid of parentheses

-7x+12x-75-90=0

We add all the numbers together, and all the variables

5x-165=0

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

5x=165

x=165/5

x=33

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