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-n-n=4-1
We move all terms to the left:
-n-n-(4-1)=0
We add all the numbers together, and all the variables
-n-n-3=0
We add all the numbers together, and all the variables
-2n-3=0
We move all terms containing n to the left, all other terms to the right
-2n=3
n=3/-2
n=-1+1/2
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