$$ frac{4}{11} extless frac{4}{9} $$
$$ frac{5}{17} extless frac{9}{17} $$
$$ frac{5}{9 } extgreater frac{10}{27} $$
$$ frac{7}{15} extless frac{19}{40} $$

4/11< 4/9.
5/17<9/17.
5/9=15/27>10/27.
7/15=56/120< 19/40=57/120.