n-2n=-7

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Solution for n-2n=-7 equation: 



n-2n=-7

We move all terms to the left:

n-2n-(-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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