Ответ:

Пошаговое объяснение:

1) 6. 1/4 * 2. 2/15 = 25/4 * 32/15 = 5/1 * 8/3 = 40/3 =

13. 1/3

2) 5. 2/3 : 8/9 = 17/3 : 8/9 = 17/3 * 9/8 = 17/1 * 3/8 =

51/8 = 6. 3/8

3) 13. 1/3 - 6. 3/8 =

13. 8/24 - 6. 9/24 =

12. 32/24 - 6. 9/24 =

6. 23/24

4) 6. 23/24 : 2 = 167/24 : 2 = 167/24 * 1/2 = 167/48 =

3. 23/48

5) 3. 23/48 + 2. 2/3 =

3. 23/48 + 2. 32/48 =

5. 55/48 = 6. 7/48

Ответ: 6. 7/48

Ответ:

Пошаговое объяснение:

(6 1/4×2 2/15 - 5 2/3:8/9) :2+2 2/3

(12 2/60 - 17/3* 9/8):2+2 2/3

(12 1/30 -6 3/8):2+ 2 2/3

(11 248/240 - 6 90/240):2+2 2/3

5 158/240:2+2 2/3

2 199/240 + 2 2/3=4 359/240=5 119 /240