12*r=12.9

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Solution for 12*r=12.9 equation: 



12r=12.9

We move all terms to the left:

12r-(12.9)=0

We add all the numbers together, and all the variables

12r-12.9=0

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

12r=12.9

r=12.9/12

r=1+0.9/12

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