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When simplified (x -1 + y -1) -1 is equal to 

A. xy 

B. x + y

C. \(\frac{xy}{x+y}\)

D. \(\frac{x+y}{xy}\)

1 Answer

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Best answer

(x -1 + y -1) -1

\((\frac{1}{x}+\frac{1}{y})^{-1}\)

\((\frac{x+y}{xy})^{-1}\)

\((\frac{xy}{x+y})\)

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