2b+2=3b-21

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Solution for 2b+2=3b-21 equation: 



2b+2=3b-21

We move all terms to the left:

2b+2-(3b-21)=0

We get rid of parentheses

2b-3b+21+2=0

We add all the numbers together, and all the variables

-1b+23=0

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

-b=-23

b=-23/-1

b=+23

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