-7-9b=-8b

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Solution for -7-9b=-8b equation: 



-7-9b=-8b

We move all terms to the left:

-7-9b-(-8b)=0

We get rid of parentheses

-9b+8b-7=0

We add all the numbers together, and all the variables

-1b-7=0

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

-b=7

b=7/-1

b=-7

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