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3n+6n=50+n
We move all terms to the left:
3n+6n-(50+n)=0
We add all the numbers together, and all the variables
3n+6n-(n+50)=0
We add all the numbers together, and all the variables
9n-(n+50)=0
We get rid of parentheses
9n-n-50=0
We add all the numbers together, and all the variables
8n-50=0
We move all terms containing n to the left, all other terms to the right
8n=50
n=50/8
n=6+1/4
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