2(b+57)=-30

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Solution for 2(b+57)=-30 equation: 



2(b+57)=-30

We move all terms to the left:

2(b+57)-(-30)=0

We add all the numbers together, and all the variables

2(b+57)+30=0

We multiply parentheses

2b+114+30=0

We add all the numbers together, and all the variables

2b+144=0

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

2b=-144

b=-144/2

b=-72

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