9b+7=-20

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Solution for 9b+7=-20 equation: 



9b+7=-20

We move all terms to the left:

9b+7-(-20)=0

We add all the numbers together, and all the variables

9b+27=0

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

9b=-27

b=-27/9

b=-3

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