-20+4b=19+12+7b

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Solution for -20+4b=19+12+7b equation: 



-20+4b=19+12+7b

We move all terms to the left:

-20+4b-(19+12+7b)=0

We add all the numbers together, and all the variables

4b-(7b+31)-20=0

We get rid of parentheses

4b-7b-31-20=0

We add all the numbers together, and all the variables

-3b-51=0

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

-3b=51

b=51/-3

b=-17

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