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-13=3-n
We move all terms to the left:
-13-(3-n)=0
We add all the numbers together, and all the variables
-(-1n+3)-13=0
We get rid of parentheses
1n-3-13=0
We add all the numbers together, and all the variables
n-16=0
We move all terms containing n to the left, all other terms to the right
n=16
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