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16+(r/2)=-11
We move all terms to the left:
16+(r/2)-(-11)=0
We add all the numbers together, and all the variables
(+r/2)+16-(-11)=0
We add all the numbers together, and all the variables
(+r/2)+27=0
We get rid of parentheses
r/2+27=0
We multiply all the terms by the denominator
r+27*2=0
We add all the numbers together, and all the variables
r+54=0
We move all terms containing r to the left, all other terms to the right
r=-54
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