2b=-9+b

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Solution for 2b=-9+b equation: 



2b=-9+b

We move all terms to the left:

2b-(-9+b)=0

We add all the numbers together, and all the variables

2b-(b-9)=0

We get rid of parentheses

2b-b+9=0

We add all the numbers together, and all the variables

b+9=0

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

b=-9

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