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(3+n)+7=23+n
We move all terms to the left:
(3+n)+7-(23+n)=0
We add all the numbers together, and all the variables
(n+3)-(n+23)+7=0
We get rid of parentheses
n-n+3-23+7=0
We add all the numbers together, and all the variables
-13!=0
There is no solution for this equation
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