r-12/2=2

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Solution for r-12/2=2 equation: 



r-12/2=2

We move all terms to the left:

r-12/2-(2)=0

determiningTheFunctionDomain
r-2-12/2=0

We add all the numbers together, and all the variables

r-8=0

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

r=8

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