ж) 1/2 - 1/3 = 3/6 - 2/6 = 1/6
з) 3/5 - 1/3 = 9/15 - 5/15 = 4/15
и) 7/8 - 2/3 = 21/24 - 16/24 = 5/24
к) 3/4 - 4/7 = 21/28 - 16/28 = 5/28
л) 9/16 - 11/24 = 27/48 - 22/48 = 5/48
м) 11/12 - 11/18 = 33/36 - 22/36 = 11/36
