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r/2+7=9.73
We move all terms to the left:
r/2+7-(9.73)=0
We add all the numbers together, and all the variables
r/2-2.73=0
We multiply all the terms by the denominator
r-(2.73)*2=0
We add all the numbers together, and all the variables
r-5.46=0
We move all terms containing r to the left, all other terms to the right
r=5.46
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