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8+11n=28+n
We move all terms to the left:
8+11n-(28+n)=0
We add all the numbers together, and all the variables
11n-(n+28)+8=0
We get rid of parentheses
11n-n-28+8=0
We add all the numbers together, and all the variables
10n-20=0
We move all terms containing n to the left, all other terms to the right
10n=20
n=20/10
n=2
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