2b-15+6b=-31

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Solution for 2b-15+6b=-31 equation: 



2b-15+6b=-31

We move all terms to the left:

2b-15+6b-(-31)=0

We add all the numbers together, and all the variables

8b+16=0

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

8b=-16

b=-16/8

b=-2

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