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0.5n=17+n=20
We move all terms to the left:
0.5n-(17+n)=0
We add all the numbers together, and all the variables
0.5n-(n+17)=0
We get rid of parentheses
0.5n-n-17=0
We add all the numbers together, and all the variables
-0.5n-17=0
We move all terms containing n to the left, all other terms to the right
-0.5n=17
n=17/-0.5
n=-34
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