-72-7x=-x+90

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Solution for -72-7x=-x+90 equation: 



-72-7x=-x+90

We move all terms to the left:

-72-7x-(-x+90)=0

We add all the numbers together, and all the variables

-7x-(-1x+90)-72=0

We get rid of parentheses

-7x+1x-90-72=0

We add all the numbers together, and all the variables

-6x-162=0

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

-6x=162

x=162/-6

x=-27

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