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