Răspuns:
a) Numitor comun 42
30/42, 28/42, 9/42
b) Numitor comun 56
35/56, 24/56, 44/56
c) Numitor comun 24
20/24, 14/24, 21/24
d) Numitor comun 16
12/16, 14/16, 5/16
e) Numitor comun 360
252/360, 135/360, 200/360
f) 12/15 = 4/5
6/10 = 3/5
36/20 = 9/5
g) 18/27 = 2/3
14/35 = 2/5
Numitor comun 15
10/15, 6/15, 29/15
h) Numitor comun 28
36/28, 77/28, 10/28