Convert mixed number to fraction.
$$\dfrac{ 20 }{ 36 }$$ .Simplify $ \dfrac{ 20 }{ 36 } $ by dividing both 20 and 36 by their GCD, which is 4. GCD(20, 36) = 4.
$$ \frac{ 20 }{ 36 } = \frac{ 20 : \color{blue}{ 4 } }{ 36 : \color{blue}{ 4 } } = \frac{ 5 }{ 9 } $$