2(r-46)=72

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Solution for 2(r-46)=72 equation: 



2(r-46)=72

We move all terms to the left:

2(r-46)-(72)=0

We multiply parentheses

2r-92-72=0

We add all the numbers together, and all the variables

2r-164=0

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

2r=164

r=164/2

r=82

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