18-7b=-20.5

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Solution for 18-7b=-20.5 equation: 



18-7b=-20.5

We move all terms to the left:

18-7b-(-20.5)=0

We add all the numbers together, and all the variables

-7b+38.5=0

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

-7b=-38.5

b=-38.5/-7

b=5+2.3333333333333/4.6666666666667

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