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