-2n+n=7

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Solution for -2n+n=7 equation: 



-2n+n=7

We move all terms to the left:

-2n+n-(7)=0

We add all the numbers together, and all the variables

-1n-7=0

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

-n=7

n=7/-1

n=-7

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