Odpowiedź:
1/4 * (4 * 3/7 + 11/14 * 6) = 1/4 * (4 * 3/7 + 11/7 * 3) = 1/4 * (12/7 + 33/7) = 1/4 * 45/7 = 45/28 = 1 i 17/28
3 i 2/3 * ((1 i 1/3 - 1/24) * 8) = 11/3 * ((8/24 - 1/24) * 8) = 11/3 * (7/24 * 8) = 11/3 * 7/3 = 77/9 = 8 i 5/9
