b-1=7b=20

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Solution for b-1=7b=20 equation: 



b-1=7b=20

We move all terms to the left:

b-1-(7b)=0

We add all the numbers together, and all the variables

-6b-1=0

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

-6b=1

b=1/-6

b=-1/6

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