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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We multiply parentheses

2b-(b+9)+6+9=0

We get rid of parentheses

2b-b-9+6+9=0

We add all the numbers together, and all the variables

b+6=0

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

b=-6

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