8b-27=2b+21

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Solution for 8b-27=2b+21 equation: 



8b-27=2b+21

We move all terms to the left:

8b-27-(2b+21)=0

We get rid of parentheses

8b-2b-21-27=0

We add all the numbers together, and all the variables

6b-48=0

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

6b=48

b=48/6

b=8

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