Alternendo: if $\dfrac{a}{b} = \dfrac{c}{d}$, then

Alternendo: if $\dfrac{a}{b} = \dfrac{c}{d}$, then
  1. $\dfrac{a}{c} = \dfrac{b}{d}$
  2. $\dfrac{b}{a} = \dfrac{d}{c}$
  3. $ab = cd$
  4. $a + b = c + d$

Solution

Alternendo swaps means.

Asked in: MH-SSC-9

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