3b-11=2b-21

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Solution for 3b-11=2b-21 equation: 



3b-11=2b-21

We move all terms to the left:

3b-11-(2b-21)=0

We get rid of parentheses

3b-2b+21-11=0

We add all the numbers together, and all the variables

b+10=0

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

b=-10

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