-18=2b+5b

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Solution for -18=2b+5b equation: 



-18=2b+5b

We move all terms to the left:

-18-(2b+5b)=0

We add all the numbers together, and all the variables

-(+7b)-18=0

We get rid of parentheses

-7b-18=0

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

-7b=18

b=18/-7

b=-2+4/7

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