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2(n+2)=4n=1-2n
We move all terms to the left:
2(n+2)-(4n)=0
We add all the numbers together, and all the variables
-4n+2(n+2)=0
We multiply parentheses
-4n+2n+4=0
We add all the numbers together, and all the variables
-2n+4=0
We move all terms containing n to the left, all other terms to the right
-2n=-4
n=-4/-2
n=+2
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