-3(-3+b)=57

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Solution for -3(-3+b)=57 equation: 



-3(-3+b)=57

We move all terms to the left:

-3(-3+b)-(57)=0

We add all the numbers together, and all the variables

-3(b-3)-57=0

We multiply parentheses

-3b+9-57=0

We add all the numbers together, and all the variables

-3b-48=0

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

-3b=48

b=48/-3

b=-16

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