Б) 1 1/4-1/2 в) 1 1/5-1/2 г) 1 1/6-1/5 д) 1 1/9-1/6 е) 1 1/8-5/6

б) 1 1/4-1/2 = 5/4-1/2 = 5/4-2/4 = 3/4,
в) 1 1/5-1/2 = 6/5-1/2 = 12/10-5/10 = 7/10,
г) 1 1/6-1/5 = 7/6-1/5 = 35/30-6/30 = 29/30,
д) 1 1/9-1/6 = 10/9-1/6 = 20/18-3/18 = 17/18,
е) 1 1/8-5/6 = 9/8-5/6 = 27/24-20/24 = 7/24