n+2n-n=4

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Solution for n+2n-n=4 equation: 



n+2n-n=4

We move all terms to the left:

n+2n-n-(4)=0

We add all the numbers together, and all the variables

2n-4=0

We move all terms containing n to the left, all other terms to the right

2n=4

n=4/2

n=2

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