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34=r/2
We move all terms to the left:
34-(r/2)=0
We add all the numbers together, and all the variables
-(+r/2)+34=0
We get rid of parentheses
-r/2+34=0
We multiply all the terms by the denominator
-r+34*2=0
We add all the numbers together, and all the variables
-1r+68=0
We move all terms containing r to the left, all other terms to the right
-r=-68
r=-68/-1
r=+68
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