$\dfrac{a/b}{c/d}$ equals

$\dfrac{a/b}{c/d}$ equals
  1. $\dfrac{ad}{bc}$
  2. $\dfrac{ac}{bd}$
  3. $\dfrac{bd}{ac}$
  4. $\dfrac{a+d}{b+c}$

Solution

Multiply by reciprocal.

Asked in: IMO

Practice more RATIONAL NUMBERS questions on Aicharya