9=3b-18

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Solution for 9=3b-18 equation: 



9=3b-18

We move all terms to the left:

9-(3b-18)=0

We get rid of parentheses

-3b+18+9=0

We add all the numbers together, and all the variables

-3b+27=0

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

-3b=-27

b=-27/-3

b=+9

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