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-6r+2r=-2r-5r
We move all terms to the left:
-6r+2r-(-2r-5r)=0
We add all the numbers together, and all the variables
-6r+2r-(-7r)=0
We add all the numbers together, and all the variables
-4r-(-7r)=0
We get rid of parentheses
-4r+7r=0
We add all the numbers together, and all the variables
3r=0
r=0/3
r=0
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