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n=2n+2n-3
We move all terms to the left:
n-(2n+2n-3)=0
We add all the numbers together, and all the variables
n-(4n-3)=0
We get rid of parentheses
n-4n+3=0
We add all the numbers together, and all the variables
-3n+3=0
We move all terms containing n to the left, all other terms to the right
-3n=-3
n=-3/-3
n=1
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