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0.5r-0.6=0.83
We move all terms to the left:
0.5r-0.6-(0.83)=0
We add all the numbers together, and all the variables
0.5r-1.43=0
We move all terms containing r to the left, all other terms to the right
0.5r=1.43
r=1.43/0.5
r=2+0.43/0.5
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