3b-9=9b+9

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Solution for 3b-9=9b+9 equation: 



3b-9=9b+9

We move all terms to the left:

3b-9-(9b+9)=0

We get rid of parentheses

3b-9b-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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