Пошаговое объяснение:
7.
10 1/7 - 1 3/7 = 9 8/7 - 1 3/7 = 8 5/7. Или :
71/7 - 10/7 = 61/7 = 8 5/7
8.
7 3/2 - 3 1/2 = 4 2/2 = 5
Или:
17/2 - 7/2 = 10/2 = 5
9.
16 - 8 5/10 = 15 10/10 - 8 5/10 = 7 5/10 = 7 1/2
15 10/10 - 8 5/10 = 160/10 - 85/10 = 75/10 =
7 5/10 = 7 1/2
10.
18 - 7 5/5 = 18 - 8 = 10
Пошаговое объяснение:
Пошаговое объяснение:
7.
10 1/7 - 1 3/7 = 9 8/7 - 1 3/7 = 8 5/7. Или :
71/7 - 10/7 = 61/7 = 8 5/7
8.
7 3/2 - 3 1/2 = 4 2/2 = 5
Или:
17/2 - 7/2 = 10/2 = 5
9.
16 - 8 5/10 = 15 10/10 - 8 5/10 = 7 5/10 = 7 1/2
Или:
15 10/10 - 8 5/10 = 160/10 - 85/10 = 75/10 =
7 5/10 = 7 1/2
10.
18 - 7 5/5 = 18 - 8 = 10