14 : 2 1/3 +12 : 1 1/3
14 : 2 1/3 + 12 : 1 1/3 = 15 1) 14 : 2 1/3 = 14 : 7/3 = 14 * 3/7 = 2 * 3 = 6 2) 12 : 1 1/3 = 12 : 4/3 = 12 * 3/4 = 3 * 3 = 9 3) 6 + 9 = 15