Question

Помогите пожалуйста

Answer 1

Ответ:

Пошаговое объяснение:

N 5

1) 1. 3/4 + 2. 1/3 =

1. 9/12 + 2. 4/12 = 3. 13/12 = 4. 1/12

2) 7. 1/2 - 1. 2/3 =

7. 3/6 - 1. 4/6 =

6. 9/6 - 1. 4/6 = 5. 5/6

3) 4. 1/12 : 5. 5/6 =

49/12 : 35/6 = 49/12 * 6/35 = 7/2 * 1/5 = 7/10

Ответ: 7/10

N 6

1) 3,6 - 1. 2/3 =

3. 6/10 - 1. 2/3 =

3. 18/30 - 1. 20/30 =

2. 48/30 - 1. 20/30 =

1. 28/30 = 1. 14/15

2) 4. 1/15 - 2. 7/9 =

4. 3/45 - 2. 35/45 =

3. 48/45 - 2. 35/45 =

1. 13/45

3) 1. 14/15 : 1. 13/45 =

29/15 : 58/45 =

29/15 * 45/58 =

1/1 * 3/2 = 3/2 = 1. 1/2

Ответ: 1. 1/2

N 7

1) 1. 1/2 - 3/5 =

1. 5/10 - 6/10 = 15/10 - 6/10 = 9/10

2) 4. 1/6 * 9/10 =

25/6 * 9/10 = 5/2 * 3/2 = 15/4 = 3. 3/4

4) 3/4 + 5/6 = 9/12 + 10/12 = 19/12 = 1. 7/12

5) 1. 7/12 * 6 = 19/12 * 6 =

19/2 * 1 = 19/2 = 9. 1/2

6) 3. 3/4 + 9. 1/2 =

3. 3/4 + 9. 2/4 = 12. 5/4 =

13. 1/4

Ответ: 13. 1/4

N 8

1) 13/24 - 7/12 =

13/24 - 14/24 = -1/24

2) -1/24 - 1/6 =

-1/24 - 4/24 = -5/24

3) 21 * (-5/24) = 7 * (-5/8) =

-35/8 = -4. 3/8

Ответ: -4. 3/8