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

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



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

We move all terms to the left:

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



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

-3(-3x+6)

We multiply parentheses

9x-18

Back to the equation:

-(9x-18)



We get rid of parentheses

-9x+18-90=0

We add all the numbers together, and all the variables

-9x-72=0

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

-9x=72

x=72/-9

x=-8

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