3+2b=b-9

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Solution for 3+2b=b-9 equation: 



3+2b=b-9

We move all terms to the left:

3+2b-(b-9)=0

We get rid of parentheses

2b-b+9+3=0

We add all the numbers together, and all the variables

b+12=0

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

b=-12

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