1 19/24
Пошаговое объяснение:
1) 1 2/7 : 2 2/7= 9/7 : 9/7= 9/7 * 7/9 = 1/1
2) 2/5 * 5/6 = 1/3
3) 1/1 - 1/3 = 3/3 - 1/3 = 2/3
4) 2 2/5 : 2 2/15= 12/5 : 32/15 = 12/5 * 15/32 = 9/8
5) 2/3 + 9/8 = 16/24 + 27/24 = 43/24 = 1 19/24
1 19/24
Пошаговое объяснение:
1) 1 2/7 : 2 2/7= 9/7 : 9/7= 9/7 * 7/9 = 1/1
2) 2/5 * 5/6 = 1/3
3) 1/1 - 1/3 = 3/3 - 1/3 = 2/3
4) 2 2/5 : 2 2/15= 12/5 : 32/15 = 12/5 * 15/32 = 9/8
5) 2/3 + 9/8 = 16/24 + 27/24 = 43/24 = 1 19/24