3(b+3)=30

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



3(b+3)=30

We move all terms to the left:

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

We multiply parentheses

3b+9-30=0

We add all the numbers together, and all the variables

3b-21=0

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

3b=21

b=21/3

b=7

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