n-n-n+7=-1

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Solution for n-n-n+7=-1 equation: 



n-n-n+7=-1

We move all terms to the left:

n-n-n+7-(-1)=0

We add all the numbers together, and all the variables

-1n+8=0

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

-n=-8

n=-8/-1

n=+8

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