-90=6x+6(-2x-9)

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Solution for -90=6x+6(-2x-9) equation: 



-90=6x+6(-2x-9)

We move all terms to the left:

-90-(6x+6(-2x-9))=0



We calculate terms in parentheses: -(6x+6(-2x-9)), so:

6x+6(-2x-9)

We multiply parentheses

6x-12x-54

We add all the numbers together, and all the variables

-6x-54

Back to the equation:

-(-6x-54)



We get rid of parentheses

6x+54-90=0

We add all the numbers together, and all the variables

6x-36=0

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

6x=36

x=36/6

x=6

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