Verified answer

1,4 = 1 целая 4/10 = 1 целая 2/5

28/20 = 7/5 = 1 целая 2/5

1 целая 6/15 = 1 целая 2/5

7/5 = 1 целая 2/5

35/30 = 7/6 = 1 целая 1/6

Равными среди исходых чисел будут:

1,4; 28/20; 1 целая 6/15; 7/5.