SOLUTION: 4M to the negitive 7th times n to the 3rd?

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Question 898299: 4M to the negitive 7th times n to the 3rd?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
4m%5E%28-7%29%2An%5E3+=+%284n%5E3%29%2F%28m%5E7%29

I used the idea that x%5E%28-k%29+=+1%2F%28x%5Ek%29