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-20+8n=-4+6n
We move all terms to the left:
-20+8n-(-4+6n)=0
We add all the numbers together, and all the variables
8n-(6n-4)-20=0
We get rid of parentheses
8n-6n+4-20=0
We add all the numbers together, and all the variables
2n-16=0
We move all terms containing n to the left, all other terms to the right
2n=16
n=16/2
n=8
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