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103=2*3.14r
We move all terms to the left:
103-(2*3.14r)=0
We add all the numbers together, and all the variables
-(+2*3.14r)+103=0
We get rid of parentheses
-2*3.14r+103=0
Wy multiply elements
-6r+103=0
We move all terms containing r to the left, all other terms to the right
-6r=-103
r=-103/-6
r=17+1/6
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