9b-3=9+7b

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Solution for 9b-3=9+7b equation: 



9b-3=9+7b

We move all terms to the left:

9b-3-(9+7b)=0

We add all the numbers together, and all the variables

9b-(7b+9)-3=0

We get rid of parentheses

9b-7b-9-3=0

We add all the numbers together, and all the variables

2b-12=0

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

2b=12

b=12/2

b=6

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