9b=12-b

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Solution for 9b=12-b equation: 



9b=12-b

We move all terms to the left:

9b-(12-b)=0

We add all the numbers together, and all the variables

9b-(-1b+12)=0

We get rid of parentheses

9b+1b-12=0

We add all the numbers together, and all the variables

10b-12=0

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

10b=12

b=12/10

b=1+1/5

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