Пошаговое объяснение:
1) 14/27 * 2. 4/7 =
14/27 * 18/7 = 2/3 * 2/1 =
4/3 = 1. 1/3
2) 2 : 3. 1/7 = 2 : 22/7 =
2 * 7/22 = 1 * 7/11 = 7/11
3) -29/15 + 1. 1/3 =
-1. 14/15 + 1. 5/15 = -9/15 =
-3/5
4) -3/5 + 7/11 =
-33/55 + 35/55 = 2/55
ответ: 2/55
