-3b-20+1=13-7b

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Solution for -3b-20+1=13-7b equation: 



-3b-20+1=13-7b

We move all terms to the left:

-3b-20+1-(13-7b)=0

We add all the numbers together, and all the variables

-3b-(-7b+13)-20+1=0

We add all the numbers together, and all the variables

-3b-(-7b+13)-19=0

We get rid of parentheses

-3b+7b-13-19=0

We add all the numbers together, and all the variables

4b-32=0

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

4b=32

b=32/4

b=8

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