12=b/3+9

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Solution for 12=b/3+9 equation: 



12=b/3+9

We move all terms to the left:

12-(b/3+9)=0

We get rid of parentheses

-b/3-9+12=0

We multiply all the terms by the denominator


-b-9*3+12*3=0

We add all the numbers together, and all the variables

-1b+9=0

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

-b=-9

b=-9/-1

b=+9

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