2b=3b+6=21

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Solution for 2b=3b+6=21 equation: 



2b=3b+6=21

We move all terms to the left:

2b-(3b+6)=0

We get rid of parentheses

2b-3b-6=0

We add all the numbers together, and all the variables

-1b-6=0

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

-b=6

b=6/-1

b=-6

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