-81=-6x+3(-4x+3)

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Solution for -81=-6x+3(-4x+3) equation: 



-81=-6x+3(-4x+3)

We move all terms to the left:

-81-(-6x+3(-4x+3))=0



We calculate terms in parentheses: -(-6x+3(-4x+3)), so:

-6x+3(-4x+3)

We multiply parentheses

-6x-12x+9

We add all the numbers together, and all the variables

-18x+9

Back to the equation:

-(-18x+9)



We get rid of parentheses

18x-9-81=0

We add all the numbers together, and all the variables

18x-90=0

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

18x=90

x=90/18

x=5

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