What is the Value of k in This SAT Math Problem?

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SUMMARY

The equation derived from the SAT math problem is (n/(n^2 - 1)) = 5/k, leading to the conclusion that k can be expressed as k = 5(n^2 - 1)/n. This formulation indicates that for any positive integer n, k is directly proportional to n. The discussion emphasizes the importance of manipulating algebraic fractions to isolate variables effectively.

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Homework Statement


(n/(n-1)) x (1/n) x (n/(n+1)) = 5/k for positive integers n and k, what is the value of k>




Homework Equations





The Attempt at a Solution



I multiplied the left side out to be (n/(n^2-1) and set it equal to 5/k

I got stuck right there.
 
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So what you've gotten is, n/(n2 - 1) = 5/k

If that's true, then we should have,

(n2 - 1)/n = k/5

Since we know that n != 0
 

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