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11+7.1n=5+7.5n
We move all terms to the left:
11+7.1n-(5+7.5n)=0
We add all the numbers together, and all the variables
7.1n-(7.5n+5)+11=0
We get rid of parentheses
7.1n-7.5n-5+11=0
We add all the numbers together, and all the variables
-0.4n+6=0
We move all terms containing n to the left, all other terms to the right
-0.4n=-6
n=-6/-0.4
n=+15
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