2b-81=13

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Solution for 2b-81=13 equation: 



2b-81=13

We move all terms to the left:

2b-81-(13)=0

We add all the numbers together, and all the variables

2b-94=0

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

2b=94

b=94/2

b=47

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