Question

помогите пж
дам 20 баллов ​

Answer 1

Пошаговое объяснение:

№1

1) 3. 1/5 - 1. 2/3 = 3. 3/15 - 1. 10/15 = 2. 18/15 - 1. 10/15 = 1. 8/15

2) 1. 8/15 * 15 = 23/15 * 15 = 23/1 * 1 = 23/1 = 23

№2

1) 2. 3/7 + 1. 1/2 = 2. 6/14 + 1. 7/14 = 3. 13/14

2) 3. 13/14 : 5/7 = 55/14 * 7/5 = 11/2 * 1/1 = 11/2 = 5. 1/2

№3

1) 5. 2/5 + 9. 1/6 = 5. 12/30 + 9. 5/30 = 14. 17/30

2) 14. 17/30 : 9. 32/45 = 437/30 : 437/45 = 437/30 * 45/437 = 1/2 * 3/1 = 3/2 = 1. 1/2

№4

1) 10 - 2. 2/3 = 9. 3/3 - 2. 2/3 = 7. 1/3

2) 7. 1/3 : 4. 8/9 = 22/3 : 44/9 = 22/3 * 9/44 = 1/1 * 3/2 = 3/2 = 1. 1/2