1) 25, 2: 3 1/2+(6-4 1/3)×0,6 2) (7-1 5/12): 6,7+(5,75-3 1/6): 15,5

1) 8,2

2) 1

Пошаговое объяснение:

25,2 : 3 1/2 + (6 - 4 1/3) * 0,6 = 8,2

1) 6 - 4 1/3 = 5 3/3 - 4 1/3 = 1 2/3

2) 25,2 : 3 1/2 = 25,2 : 3,5 = 7,2

3) 1 2/3 * 0,6 = 5/3 * 6/10 = 2/2 = 1

4) 7,2 + 1 = 8,2

(7 - 1 5/12) : 6,7 + (5,75 - 3 1/6) : 15,5 = 1

1) 7 - 1 5/12 = 6 12/12 - 1 5/12 = 5 7/12 = 67/12

2) 5,75 - 3 1/6 = 5 3/4 - 3 1/6 = 5 18/24 - 3 4/24 = 2 14/24 = 2 7/12 = 31/12

3) 67/12 : 6,7 = 67/12 : 67/10 = 67/12 * 10/67 = 10/12 = 5/6

4) 31/12 : 15,5 = 31/12 : 155/10 = 31/12 : 31/2 = 31/12 * 2/31 = 2/12 = 1/6

5) 5/6 + 1/6 = 6/6 = 1