-2b+20=-7b-20

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Solution for -2b+20=-7b-20 equation: 



-2b+20=-7b-20

We move all terms to the left:

-2b+20-(-7b-20)=0

We get rid of parentheses

-2b+7b+20+20=0

We add all the numbers together, and all the variables

5b+40=0

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

5b=-40

b=-40/5

b=-8

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