Question

помогите решить дам 100 баллов​

Answer 1

Ответ:

Пошаговое объяснение:

1.

1) 4/15 + 2/5 = 4/15 + 6/15 = 10/15 = 2/3

2) 2/3 : 2 = 2/3 * 1/2 = 2/6 = 1/3

2.

1) 7/8 - 3/5 = 35/40 - 24/40 = 11/40

2) 11/40 : 1. 1/3 = 11/40 : 4/3 = 11/40 * 3/4 = 33/160

3.

1) 1. 1/6 : 1. 5/9 = 7/6 : 14/9 = 7/6 * 9/14 = 1/2 * 3/2 = 3/4

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

4.

1) 3. 1/4 + 2. 1/6 = 3. 3/12 + 2. 2/12 = 5. 5/12

2) 5. 5/12 : 2. 3/5 = 65/12 : 13/5 = 65/12 * 5/13 = 5/12 * 5/1 = 25/12 = 2. 1/12

5.

1) 1/6 + 4/9 = 3/18 + 8/18 = 11/18

2) 11/18 - 1/2 = 11/18 - 9/18 = 2/18 = 1/9

6.

= 4. 24/36 - 3. 20/36 + 21/36 = 1. 4/36 + 21/36 = 1. 25/36

Answer 2

Ответ:

Пошаговое объяснение:

1.

1) 4/15 + 2/5 = 4/15 + 6/15 = 10/15 = 2/3

2) 2/3 : 2 = 2/3 * 1/2 = 2/6 = 1/3

2.

1) 7/8 - 3/5 = 35/40 - 24/40 = 11/40

2) 11/40 : 1. 1/3 = 11/40 : 4/3 = 11/40 * 3/4 = 33/160

3.

1) 1. 1/6 : 1. 5/9 = 7/6 : 14/9 = 7/6 * 9/14 = 1/2 * 3/2 = 3/4

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

4.

1) 3. 1/4 + 2. 1/6 = 3. 3/12 + 2. 2/12 = 5. 5/12

2) 5. 5/12 : 2. 3/5 = 65/12 : 13/5 = 65/12 * 5/13 = 5/12 * 5/1 = 25/12 = 2. 1/12

5.

1) 1/6 + 4/9 = 3/18 + 8/18 = 11/18

2) 11/18 - 1/2 = 11/18 - 9/18 = 2/18 = 1/9

6.

= 4. 24/36 - 3. 20/36 + 21/36 = 1. 4/36 + 21/36 = 1. 25/36