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(2n+1)+(2n+2)=100
We move all terms to the left:
(2n+1)+(2n+2)-(100)=0
We get rid of parentheses
2n+2n+1+2-100=0
We add all the numbers together, and all the variables
4n-97=0
We move all terms containing n to the left, all other terms to the right
4n=97
n=97/4
n=24+1/4
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