-90=2(3+6x)

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Solution for -90=2(3+6x) equation: 



-90=2(3+6x)

We move all terms to the left:

-90-(2(3+6x))=0

We add all the numbers together, and all the variables

-(2(6x+3))-90=0



We calculate terms in parentheses: -(2(6x+3)), so:

2(6x+3)

We multiply parentheses

12x+6

Back to the equation:

-(12x+6)



We get rid of parentheses

-12x-6-90=0

We add all the numbers together, and all the variables

-12x-96=0

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

-12x=96

x=96/-12

x=-8

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