-2b+12=20

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Solution for -2b+12=20 equation: 



-2b+12=20

We move all terms to the left:

-2b+12-(20)=0

We add all the numbers together, and all the variables

-2b-8=0

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

-2b=8

b=8/-2

b=-4

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