-2(b+5)=20

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Solution for -2(b+5)=20 equation: 



-2(b+5)=20

We move all terms to the left:

-2(b+5)-(20)=0

We multiply parentheses

-2b-10-20=0

We add all the numbers together, and all the variables

-2b-30=0

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

-2b=30

b=30/-2

b=-15

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