12=r-5r

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Solution for 12=r-5r equation: 



12=r-5r

We move all terms to the left:

12-(r-5r)=0

We add all the numbers together, and all the variables

-(-4r)+12=0

We get rid of parentheses

4r+12=0

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

4r=-12

r=-12/4

r=-3

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