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0.37=2.72^(5r)
We move all terms to the left:
0.37-(2.72^(5r))=0
We get rid of parentheses
-2.72^5r+0.37=0
We move all terms containing r to the left, all other terms to the right
-2.72^5r=-0.37
r=-0.37/1
r=-0.37
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