5b+7b=-31

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Solution for 5b+7b=-31 equation: 



5b+7b=-31

We move all terms to the left:

5b+7b-(-31)=0

We add all the numbers together, and all the variables

12b+31=0

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

12b=-31

b=-31/12

b=-2+7/12

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