2b-3=81

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Solution for 2b-3=81 equation: 



2b-3=81

We move all terms to the left:

2b-3-(81)=0

We add all the numbers together, and all the variables

2b-84=0

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

2b=84

b=84/2

b=42

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