Respuesta :

cofuls

Answer:

[tex]\frac{y-x}{y+x}[/tex]

It seems that there is no such option.

Answer with explanation:

[tex]\frac{\frac{1}{x}-\frac{1}{y}}{\frac{1}{x}+\frac{1}{y}}\\\\=\frac{\frac{y-x}{yx}}{\frac{y+x}{yx}}\\\\=\frac{y-x}{y+x}[/tex]

None of the Option

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