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6.1r=36.6
We move all terms to the left:
6.1r-(36.6)=0
We add all the numbers together, and all the variables
6.1r-36.6=0
We move all terms containing r to the left, all other terms to the right
6.1r=36.6
r=36.6/6.1
r=6+7.105427357601E-15/6.1
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