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-13=2-4n-1n
We move all terms to the left:
-13-(2-4n-1n)=0
We add all the numbers together, and all the variables
-(-5n+2)-13=0
We get rid of parentheses
5n-2-13=0
We add all the numbers together, and all the variables
5n-15=0
We move all terms containing n to the left, all other terms to the right
5n=15
n=15/5
n=3
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