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6(n-3)=3n
We move all terms to the left:
6(n-3)-(3n)=0
We add all the numbers together, and all the variables
-3n+6(n-3)=0
We multiply parentheses
-3n+6n-18=0
We add all the numbers together, and all the variables
3n-18=0
We move all terms containing n to the left, all other terms to the right
3n=18
n=18/3
n=6
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