-9=b+18

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Solution for -9=b+18 equation: 



-9=b+18

We move all terms to the left:

-9-(b+18)=0

We get rid of parentheses

-b-18-9=0

We add all the numbers together, and all the variables

-1b-27=0

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

-b=27

b=27/-1

b=-27

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