-81=-3(3-8m)

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Solution for -81=-3(3-8m) equation: 



-81=-3(3-8m)

We move all terms to the left:

-81-(-3(3-8m))=0

We add all the numbers together, and all the variables

-(-3(-8m+3))-81=0



We calculate terms in parentheses: -(-3(-8m+3)), so:

-3(-8m+3)

We multiply parentheses

24m-9

Back to the equation:

-(24m-9)



We get rid of parentheses

-24m+9-81=0

We add all the numbers together, and all the variables

-24m-72=0

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

-24m=72

m=72/-24

m=-3

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