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4=n/2+7
We move all terms to the left:
4-(n/2+7)=0
We get rid of parentheses
-n/2-7+4=0
We multiply all the terms by the denominator
-n-7*2+4*2=0
We add all the numbers together, and all the variables
-1n-6=0
We move all terms containing n to the left, all other terms to the right
-n=6
n=6/-1
n=-6
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