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

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



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

We move all terms to the left:

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



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

6x+3(2x+6)

We multiply parentheses

6x+6x+18

We add all the numbers together, and all the variables

12x+18

Back to the equation:

-(12x+18)



We get rid of parentheses

-12x-18+90=0

We add all the numbers together, and all the variables

-12x+72=0

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

-12x=-72

x=-72/-12

x=+6

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