-7b-2b=-9

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Solution for -7b-2b=-9 equation: 



-7b-2b=-9

We move all terms to the left:

-7b-2b-(-9)=0

We add all the numbers together, and all the variables

-9b+9=0

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

-9b=-9

b=-9/-9

b=1

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