Convert mixed number to fraction.
$$\dfrac{ 15 }{ 27 }$$ .Simplify $ \dfrac{ 15 }{ 27 } $ by dividing both 15 and 27 by their GCD, which is 3. GCD(15, 27) = 3.
$$ \frac{ 15 }{ 27 } = \frac{ 15 : \color{blue}{ 3 } }{ 27 : \color{blue}{ 3 } } = \frac{ 5 }{ 9 } $$