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-6=2.3r
We move all terms to the left:
-6-(2.3r)=0
We add all the numbers together, and all the variables
-(+2.3r)-6=0
We get rid of parentheses
-2.3r-6=0
We move all terms containing r to the left, all other terms to the right
-2.3r=6
r=6/-2.3
r=-2+1/1.6428571428571
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