12r-12=12

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Solution for 12r-12=12 equation: 



12r-12=12

We move all terms to the left:

12r-12-(12)=0

We add all the numbers together, and all the variables

12r-24=0

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

12r=24

r=24/12

r=2

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