`a) \frac{2}{5} > \frac{1}{3} = \frac{6}{15} > \frac{5}{15}`
`b) \frac{-9}{5} < \frac{11}{6} = \frac{-54}{30} < \frac{55}{30}`
`c) \frac{34}{35} < \frac{35}{34} = \frac{34.34}{34.35} < \frac{35.35}{34.35}`
`d) \frac{-30}{55} = \frac{6}{-11} = \frac{-330}{605} = \frac{-330}{605}`