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-2n-1=13-4n
We move all terms to the left:
-2n-1-(13-4n)=0
We add all the numbers together, and all the variables
-2n-(-4n+13)-1=0
We get rid of parentheses
-2n+4n-13-1=0
We add all the numbers together, and all the variables
2n-14=0
We move all terms containing n to the left, all other terms to the right
2n=14
n=14/2
n=7
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