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-3-7n-2n=13-5n
We move all terms to the left:
-3-7n-2n-(13-5n)=0
We add all the numbers together, and all the variables
-7n-2n-(-5n+13)-3=0
We add all the numbers together, and all the variables
-9n-(-5n+13)-3=0
We get rid of parentheses
-9n+5n-13-3=0
We add all the numbers together, and all the variables
-4n-16=0
We move all terms containing n to the left, all other terms to the right
-4n=16
n=16/-4
n=-4
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