b-9+3(b)=30

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Solution for b-9+3(b)=30 equation: 



b-9+3(b)=30

We move all terms to the left:

b-9+3(b)-(30)=0

We add all the numbers together, and all the variables

4b-39=0

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

4b=39

b=39/4

b=9+3/4

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