90=7x+6+6x+7

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Solution for 90=7x+6+6x+7 equation: 



90=7x+6+6x+7

We move all terms to the left:

90-(7x+6+6x+7)=0

We add all the numbers together, and all the variables

-(13x+13)+90=0

We get rid of parentheses

-13x-13+90=0

We add all the numbers together, and all the variables

-13x+77=0

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

-13x=-77

x=-77/-13

x=5+12/13

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