12b-9+2b+b=-87

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Solution for 12b-9+2b+b=-87 equation: 



12b-9+2b+b=-87

We move all terms to the left:

12b-9+2b+b-(-87)=0

We add all the numbers together, and all the variables

15b+78=0

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

15b=-78

b=-78/15

b=-5+1/5

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