5b-30=2b-9

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Solution for 5b-30=2b-9 equation: 



5b-30=2b-9

We move all terms to the left:

5b-30-(2b-9)=0

We get rid of parentheses

5b-2b+9-30=0

We add all the numbers together, and all the variables

3b-21=0

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

3b=21

b=21/3

b=7

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