9-2b=-8b-9

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Solution for 9-2b=-8b-9 equation: 



9-2b=-8b-9

We move all terms to the left:

9-2b-(-8b-9)=0

We get rid of parentheses

-2b+8b+9+9=0

We add all the numbers together, and all the variables

6b+18=0

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

6b=-18

b=-18/6

b=-3

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