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7.96=2*3.14r
We move all terms to the left:
7.96-(2*3.14r)=0
We add all the numbers together, and all the variables
-(+2*3.14r)+7.96=0
We get rid of parentheses
-2*3.14r+7.96=0
Wy multiply elements
-6r+7.96=0
We move all terms containing r to the left, all other terms to the right
-6r=-7.96
r=-7.96/-6
r=1+1/3.0612244898
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