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pickupchik [31]
3 years ago
15

Helpppppppppppppppppppppppppppppppppppppp

Mathematics
1 answer:
nata0808 [166]3 years ago
7 0
\dfrac{1 + \frac{1}{y}}{1 - \frac{1}{y}} =

= \dfrac{y}{y} \times \dfrac{1 + \frac{1}{y}}{1 - \frac{1}{y}}

= \dfrac{1 \times y + \frac{1}{y} \times y}{1 \times y- \frac{1}{y} \times y}

= \dfrac{y + 1}{y- 1}

Answer:      B.      \dfrac{y + 1}{y- 1}
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