12b+4=3+9b

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Solution for 12b+4=3+9b equation: 



12b+4=3+9b

We move all terms to the left:

12b+4-(3+9b)=0

We add all the numbers together, and all the variables

12b-(9b+3)+4=0

We get rid of parentheses

12b-9b-3+4=0

We add all the numbers together, and all the variables

3b+1=0

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

3b=-1

b=-1/3

b=-1/3

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