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n/2-2=39
We move all terms to the left:
n/2-2-(39)=0
We add all the numbers together, and all the variables
n/2-41=0
We multiply all the terms by the denominator
n-41*2=0
We add all the numbers together, and all the variables
n-82=0
We move all terms containing n to the left, all other terms to the right
n=82
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