Пошаговое объяснение:
1)
11/19 + (7/19 - 6/19) = 11/19 + 1/19 = 12/19
2)
1) (3/17 + 1/17 + 10/17) - 5/17 = 14/17 - 5/17 = 9/17
2) (5/13 + 2/13 + 1/13) - 17/13 = 8/13 - 17/13 = -9/13
Пошаговое объяснение:
1)
11/19 + (7/19 - 6/19) = 11/19 + 1/19 = 12/19
2)
1) (3/17 + 1/17 + 10/17) - 5/17 = 14/17 - 5/17 = 9/17
2) (5/13 + 2/13 + 1/13) - 17/13 = 8/13 - 17/13 = -9/13