Odpowiedź:
(12 i 1/3 - 1/2) * 12 : 1 i 1/3 = (12 i 2/6 - 3/6) * 12 : 1 i 1/3 = (11 i 8/6 - 3/6) * 12 : 1 i 1/3 = 11 i 5/6 * 12 : 1 i 1/3 = 71/6 * 12 * 3/4 = 142 * 3/4 = 426/4 = 106 i 2/4 = 106 i 1/2
