Convert mixed number to fraction.
$$\dfrac{ 40 }{ 60 }$$ .Simplify $ \dfrac{ 40 }{ 60 } $ by dividing both 40 and 60 by their GCD, which is 20. GCD(40, 60) = 20.
$$ \frac{ 40 }{ 60 } = \frac{ 40 : \color{blue}{ 20 } }{ 60 : \color{blue}{ 20 } } = \frac{ 2 }{ 3 } $$