а) 1 / 3 * 8 = 1 / 3 * 8 / 1 = 8 / 3 = 2 2 / 3.
б) 3/ 5 * 2 = 3 / 5 * 2 / 1 = 6 / 5 = 1 1 / 5 = 1, 2
в) 7 / 35 * 10 = 7 / 35 * 10 / 1 = 70 / 35 = 14 / 7 = 2 / 1 = 2
г ) 5 / 8 * 7 = 5 / 8 * 7 / 1 = 35 / 8 = 4 3 / 8
д ) 7 / 9 * 7 = 7 / 9 * 7 / 1 = 49 / 9 = 5 4 / 9
е) 5 / 18 * 24 = 5 / 18 * 24 / 1 = 5 / 9 * 12 / 1 = 60 / 9 = 6 6 / 9