Convert mixed number to fraction.
$$\dfrac{ 1280 }{ 800 }$$ .Simplify $ \dfrac{ 1280 }{ 800 } $ by dividing both 1280 and 800 by their GCD, which is 160. GCD(1280, 800) = 160.
$$ \frac{ 1280 }{ 800 } = \frac{ 1280 : \color{blue}{ 160 } }{ 800 : \color{blue}{ 160 } } = \frac{ 8 }{ 5 } $$