Convert mixed number to fraction.
$$\dfrac{ 40 }{ 64 }$$ .Simplify $ \dfrac{ 40 }{ 64 } $ by dividing both 40 and 64 by their GCD, which is 8. GCD(40, 64) = 8.
$$ \frac{ 40 }{ 64 } = \frac{ 40 : \color{blue}{ 8 } }{ 64 : \color{blue}{ 8 } } = \frac{ 5 }{ 8 } $$