-3(3b-6)=81

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Solution for -3(3b-6)=81 equation: 



-3(3b-6)=81

We move all terms to the left:

-3(3b-6)-(81)=0

We multiply parentheses

-9b+18-81=0

We add all the numbers together, and all the variables

-9b-63=0

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

-9b=63

b=63/-9

b=-7

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