b+84=7b

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Solution for b+84=7b equation: 



b+84=7b

We move all terms to the left:

b+84-(7b)=0

We add all the numbers together, and all the variables

-6b+84=0

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

-6b=-84

b=-84/-6

b=+14

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