-r+7r=-12

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Solution for -r+7r=-12 equation: 



-r+7r=-12

We move all terms to the left:

-r+7r-(-12)=0

We add all the numbers together, and all the variables

6r+12=0

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

6r=-12

r=-12/6

r=-2

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