e: 7/60=14/120
3/40=9/120
11/30=44/120
f: -5/21=-20/84
3/28=9/84
-45/108=-5/12=-35/84
e, \(\dfrac{14}{120}\), \(\dfrac{9}{120}\), \(\dfrac{44}{120}\)
f, \(\dfrac{-20}{84}\), \(\dfrac{9}{84}\), \(\dfrac{-45}{108}=\dfrac{-5}{12}\) = \(\dfrac{-35}{84}\)