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16-n=n+4
We move all terms to the left:
16-n-(n+4)=0
We add all the numbers together, and all the variables
-1n-(n+4)+16=0
We get rid of parentheses
-1n-n-4+16=0
We add all the numbers together, and all the variables
-2n+12=0
We move all terms containing n to the left, all other terms to the right
-2n=-12
n=-12/-2
n=+6
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