-10b+9=-7-8b

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Solution for -10b+9=-7-8b equation: 



-10b+9=-7-8b

We move all terms to the left:

-10b+9-(-7-8b)=0

We add all the numbers together, and all the variables

-10b-(-8b-7)+9=0

We get rid of parentheses

-10b+8b+7+9=0

We add all the numbers together, and all the variables

-2b+16=0

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

-2b=-16

b=-16/-2

b=+8

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