-7b-3+9b=-20

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Solution for -7b-3+9b=-20 equation: 



-7b-3+9b=-20

We move all terms to the left:

-7b-3+9b-(-20)=0

We add all the numbers together, and all the variables

2b+17=0

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

2b=-17

b=-17/2

b=-8+1/2

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