-12b-20=19+17-8b

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Solution for -12b-20=19+17-8b equation: 



-12b-20=19+17-8b

We move all terms to the left:

-12b-20-(19+17-8b)=0

We add all the numbers together, and all the variables

-12b-(-8b+36)-20=0

We get rid of parentheses

-12b+8b-36-20=0

We add all the numbers together, and all the variables

-4b-56=0

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

-4b=56

b=56/-4

b=-14

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