2(r-81)=38

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Solution for 2(r-81)=38 equation: 



2(r-81)=38

We move all terms to the left:

2(r-81)-(38)=0

We multiply parentheses

2r-162-38=0

We add all the numbers together, and all the variables

2r-200=0

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

2r=200

r=200/2

r=100

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