Răspuns:
Numitor comun 20
(35+6+11)/20=52/20=13/5
Numitor comun 24
(9+26+1)/24=36/24=3/2
Numitor comun 28
(21+9+22)/28=52/28=13/7
Numitor comun 36
(21+10+11)/36=42/36=7/6
Numitor comun 72
(15+14+1)/72=30/72=5/12
Numitor comun 75
(20+7+27)/75=54/75=18/25