3b-21=2b-14

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Solution for 3b-21=2b-14 equation: 



3b-21=2b-14

We move all terms to the left:

3b-21-(2b-14)=0

We get rid of parentheses

3b-2b+14-21=0

We add all the numbers together, and all the variables

b-7=0

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

b=7

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