5b-6=21+2b

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Solution for 5b-6=21+2b equation: 



5b-6=21+2b

We move all terms to the left:

5b-6-(21+2b)=0

We add all the numbers together, and all the variables

5b-(2b+21)-6=0

We get rid of parentheses

5b-2b-21-6=0

We add all the numbers together, and all the variables

3b-27=0

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

3b=27

b=27/3

b=9

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