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31.7/r-97.7=0
Domain of the equation: r!=0We multiply all the terms by the denominator
r∈R
-(97.7)*r+31.7=0
We multiply parentheses
-97.7r+31.7=0
We move all terms containing r to the left, all other terms to the right
-97.7r=-31.7
r=-31.7/-97.7
r=18.647058823529/57.470588235294
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