-9b-1=-7-7b

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Solution for -9b-1=-7-7b equation: 



-9b-1=-7-7b

We move all terms to the left:

-9b-1-(-7-7b)=0

We add all the numbers together, and all the variables

-9b-(-7b-7)-1=0

We get rid of parentheses

-9b+7b+7-1=0

We add all the numbers together, and all the variables

-2b+6=0

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

-2b=-6

b=-6/-2

b=+3

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