81=3m-3(1-3m)

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Solution for 81=3m-3(1-3m) equation: 



81=3m-3(1-3m)

We move all terms to the left:

81-(3m-3(1-3m))=0

We add all the numbers together, and all the variables

-(3m-3(-3m+1))+81=0



We calculate terms in parentheses: -(3m-3(-3m+1)), so:

3m-3(-3m+1)

We multiply parentheses

3m+9m-3

We add all the numbers together, and all the variables

12m-3

Back to the equation:

-(12m-3)



We get rid of parentheses

-12m+3+81=0

We add all the numbers together, and all the variables

-12m+84=0

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

-12m=-84

m=-84/-12

m=+7

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