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18=n+2.8
We move all terms to the left:
18-(n+2.8)=0
We get rid of parentheses
-n-2.8+18=0
We add all the numbers together, and all the variables
-1n+15.2=0
We move all terms containing n to the left, all other terms to the right
-n=-15.2
n=-15.2/-1
n=15+0.2/1
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