-9(b+10)=81

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Solution for -9(b+10)=81 equation: 



-9(b+10)=81

We move all terms to the left:

-9(b+10)-(81)=0

We multiply parentheses

-9b-90-81=0

We add all the numbers together, and all the variables

-9b-171=0

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

-9b=171

b=171/-9

b=-19

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