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7n+23(1-n)-2(1+n)=14
We move all terms to the left:
7n+23(1-n)-2(1+n)-(14)=0
We add all the numbers together, and all the variables
7n+23(-1n+1)-2(n+1)-14=0
We multiply parentheses
7n-23n-2n+23-2-14=0
We add all the numbers together, and all the variables
-18n+7=0
We move all terms containing n to the left, all other terms to the right
-18n=-7
n=-7/-18
n=7/18
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