2(r-8)=84

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Solution for 2(r-8)=84 equation: 



2(r-8)=84

We move all terms to the left:

2(r-8)-(84)=0

We multiply parentheses

2r-16-84=0

We add all the numbers together, and all the variables

2r-100=0

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

2r=100

r=100/2

r=50

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