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13-3n=6n-11-n
We move all terms to the left:
13-3n-(6n-11-n)=0
We add all the numbers together, and all the variables
-3n-(5n-11)+13=0
We get rid of parentheses
-3n-5n+11+13=0
We add all the numbers together, and all the variables
-8n+24=0
We move all terms containing n to the left, all other terms to the right
-8n=-24
n=-24/-8
n=+3
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