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6n-20=-2n+4
We move all terms to the left:
6n-20-(-2n+4)=0
We get rid of parentheses
6n+2n-4-20=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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