Пожалуйста решите 71 и 72 пример
71. 8 1/6 : 1 1/6 - 6 2/3 = 1/3 1) 8 1/6 : 1 1/6 = 49/6 : 7/6 = 49/6 : 6/7 = 7 2) 7 - 6 2/3 = 6 3/3 - 6 2/3 = 1/3 72. 0,8 * 2 1/12 + 2 1/6 = 3 5/6 1) 0,8 * 2 1/12 = 8/10 * 25/12 = 2/2 * 5/3 = 5/3 = 1 2/3 2) 1 2/3 + 2 1/6 = 1 4/6 + 2 1/6 = 3 5/6