81=8b+5

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Solution for 81=8b+5 equation: 



81=8b+5

We move all terms to the left:

81-(8b+5)=0

We get rid of parentheses

-8b-5+81=0

We add all the numbers together, and all the variables

-8b+76=0

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

-8b=-76

b=-76/-8

b=9+1/2

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