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3=n/4-2
We move all terms to the left:
3-(n/4-2)=0
We get rid of parentheses
-n/4+2+3=0
We multiply all the terms by the denominator
-n+2*4+3*4=0
We add all the numbers together, and all the variables
-1n+20=0
We move all terms containing n to the left, all other terms to the right
-n=-20
n=-20/-1
n=+20
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