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-3+8r-8r=r+2
We move all terms to the left:
-3+8r-8r-(r+2)=0
We add all the numbers together, and all the variables
-(r+2)-3=0
We get rid of parentheses
-r-2-3=0
We add all the numbers together, and all the variables
-1r-5=0
We move all terms containing r to the left, all other terms to the right
-r=5
r=5/-1
r=-5
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