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17=5-n.n
We move all terms to the left:
17-(5-n.n)=0
We add all the numbers together, and all the variables
-(-n.n+5)+17=0
We get rid of parentheses
n.n-5+17=0
We add all the numbers together, and all the variables
n.n+12=0
We move all terms containing n to the left, all other terms to the right
n.n=-12
n=-12/1
n=-12
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