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n+(n+2)+(n+4)=6n
We move all terms to the left:
n+(n+2)+(n+4)-(6n)=0
We add all the numbers together, and all the variables
-5n+(n+2)+(n+4)=0
We get rid of parentheses
-5n+n+n+2+4=0
We add all the numbers together, and all the variables
-3n+6=0
We move all terms containing n to the left, all other terms to the right
-3n=-6
n=-6/-3
n=+2
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