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3n+6-n=15-5n+19
We move all terms to the left:
3n+6-n-(15-5n+19)=0
We add all the numbers together, and all the variables
3n-n-(-5n+34)+6=0
We add all the numbers together, and all the variables
2n-(-5n+34)+6=0
We get rid of parentheses
2n+5n-34+6=0
We add all the numbers together, and all the variables
7n-28=0
We move all terms containing n to the left, all other terms to the right
7n=28
n=28/7
n=4
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