b+7=7b-83

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Solution for b+7=7b-83 equation: 



b+7=7b-83

We move all terms to the left:

b+7-(7b-83)=0

We get rid of parentheses

b-7b+83+7=0

We add all the numbers together, and all the variables

-6b+90=0

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

-6b=-90

b=-90/-6

b=+15

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