3(2b-9)=15

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Solution for 3(2b-9)=15 equation: 



3(2b-9)=15

We move all terms to the left:

3(2b-9)-(15)=0

We multiply parentheses

6b-27-15=0

We add all the numbers together, and all the variables

6b-42=0

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

6b=42

b=42/6

b=7

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