90=56+3x+7

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Solution for 90=56+3x+7 equation: 



90=56+3x+7

We move all terms to the left:

90-(56+3x+7)=0

We add all the numbers together, and all the variables

-(3x+63)+90=0

We get rid of parentheses

-3x-63+90=0

We add all the numbers together, and all the variables

-3x+27=0

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

-3x=-27

x=-27/-3

x=+9

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