18=-5b+8b-9

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Solution for 18=-5b+8b-9 equation: 



18=-5b+8b-9

We move all terms to the left:

18-(-5b+8b-9)=0

We add all the numbers together, and all the variables

-(3b-9)+18=0

We get rid of parentheses

-3b+9+18=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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