2(r-75)=12

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Solution for 2(r-75)=12 equation: 



2(r-75)=12

We move all terms to the left:

2(r-75)-(12)=0

We multiply parentheses

2r-150-12=0

We add all the numbers together, and all the variables

2r-162=0

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

2r=162

r=162/2

r=81

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