n+n-n+2n=12

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Solution for n+n-n+2n=12 equation:



n+n-n+2n=12
We move all terms to the left:
n+n-n+2n-(12)=0
We add all the numbers together, and all the variables
3n-12=0
We move all terms containing n to the left, all other terms to the right
3n=12
n=12/3
n=4

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