Приведите дроби 2/3, 1/2, 3/4,1/6,4/15,7/20,11/30 к знаменателю 60
2/3 = 40/60
1/2 = 30/60
3/4 = 45/60
1/6 = 10/60
4/15 = 16/60
7/20 = 21/60
11/30 = 22/60