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17n-23n+11.5n=4
We move all terms to the left:
17n-23n+11.5n-(4)=0
We add all the numbers together, and all the variables
5.5n-4=0
We move all terms containing n to the left, all other terms to the right
5.5n=4
n=4/5.5
n=4/5.5
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