Пошаговое объяснение:
А
1) 12 - 5 3/4 = 11 4/4 - 5 3/4 = 6 1/4
2) 6 1/4 * 4/5 = 25/4 * 4/5 = 25/5 = 5
Б
11 15/24 + 7 4/24 = 18 19/24
В
8/3 : 16/9 = 8/3 * 9/16 = 1/1 * 3/2 = 3/2 = 1 1/2
Г
4 4/20 - 2 15/20 = 3 24/20 - 2 15/20 = 1 9/20
Пошаговое объяснение:
А
1) 12 - 5 3/4 = 11 4/4 - 5 3/4 = 6 1/4
2) 6 1/4 * 4/5 = 25/4 * 4/5 = 25/5 = 5
Б
11 15/24 + 7 4/24 = 18 19/24
В
8/3 : 16/9 = 8/3 * 9/16 = 1/1 * 3/2 = 3/2 = 1 1/2
Г
4 4/20 - 2 15/20 = 3 24/20 - 2 15/20 = 1 9/20