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-312.29=16.7r
We move all terms to the left:
-312.29-(16.7r)=0
We add all the numbers together, and all the variables
-(+16.7r)-312.29=0
We get rid of parentheses
-16.7r-312.29=0
We move all terms containing r to the left, all other terms to the right
-16.7r=312.29
r=312.29/-16.7
r=-18+6.9171597633134/9.8816568047334
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