а) 1 1/4 - 1/2 = 5/4 - 2/4 = 3/4
б) 2 1/2 - 2/3 = 5/2 - 2/3 = 15/6 - 4/6 = 11/6
в) 3 2/3 - 2 4/5 = 11/3 - 14/5 = (55 - 42)/15 = 13/15
г) 2 3/4 - 1 5/6 = 11/4 - 11/6 = (66 - 44)/24 = 22/24 = 11/12
а) 1 1/4 - 1/2 = 5/4 - 2/4 = 3/4
б) 2 1/2 - 2/3 = 5/2 - 2/3 = 15/6 - 4/6 = 11/6
в) 3 2/3 - 2 4/5 = 11/3 - 14/5 = (55 - 42)/15 = 13/15
г) 2 3/4 - 1 5/6 = 11/4 - 11/6 = (66 - 44)/24 = 22/24 = 11/12