9-2b=-9

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Solution for 9-2b=-9 equation: 



9-2b=-9

We move all terms to the left:

9-2b-(-9)=0

We add all the numbers together, and all the variables

-2b+18=0

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

-2b=-18

b=-18/-2

b=+9

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