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Which of the following equals

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Which of the following equals [#permalink] New post 17 Dec 2016, 08:03
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Question Stats:

80% (00:27) correct 20% (01:32) wrong based on 5 sessions
Which of the following equals the reciprocal of \(x - \frac{1}{y}\), where \(x - \frac{1}{y}\) different from zero ?

(A) \(\frac{1}{x} - y\)
(B) \(\frac{-y}{x}\)
(C) \(\frac{y}{x - 1}\)
(D) \(\frac{x}{xy - 1}\)
(E) \(\frac{y}{xy - 1}\)
[Reveal] Spoiler: OA

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Re: Which of the following equals [#permalink] New post 29 Sep 2017, 07:43
\(x-\frac{1}{y}=\frac{xy-1}{y}\). Then taking the reciprocal means to invert numerator and denominator, and we get \(\frac{y}{xy-x}\).

Answer E
Re: Which of the following equals   [#permalink] 29 Sep 2017, 07:43
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Which of the following equals

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