2r+19=81

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Solution for 2r+19=81 equation: 



2r+19=81

We move all terms to the left:

2r+19-(81)=0

We add all the numbers together, and all the variables

2r-62=0

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

2r=62

r=62/2

r=31

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