Question

СРОЧНО ПЖ ДАЮ 100 БАЛЛОВ

Answer 1

Ответ:

Пошаговое объяснение:

№1

а) - 3/4 < - 2/3   б)  - 19/32 > (-5)/8   в) 2/(-3)  >  - 5/6

№2

13/42 + ( - 9/14) = 13/42 - 27/42 = - 14/42 = - 1/3

11/48 + (- 9/16) = 11/48 - 27/48 = - 16/ 48 = - 1/3

7/39 + ( - 9/26) = 14/78 - 27/78 = - 13/78 = - 1/6

№3

1/3 - (- 2/15) - 29/30 = 1/3 + 2/15 - 29/30 = 10/30 + 4/30 - 29/30 = - 15/30

= - 1/2

1/4 - ( - 5/12) - 35/36 = 1/4 + 5/12 - 35/36 = 9/36 + 15/36 - 35/36 = - 11/36

№4

а) 5/4 *(-2/7) = - 5/14

б) -3/4 * 5/9 = - 5/21

в) -4/9 *( - 3/8)= - 1/6

№5

8 : (-24/15) = 8 * (-15/24) = - 5

- 16/9 : 8/3 = - 16/9 * 3/8 = - 2/3

- 28/25 : ( - 24/15) = - 28/25 * (- 15/24)= 7/10

№6

- 3 1/2 + 2 5/6 = - 3 3/6 + 2 5/6 = - 2 9/6 + 2 5/6 = - 2/3

- 1 2/3 - 2 1/3 = - 4

1 1/5 *( - 5/12) = 6/5 * ( - 5/12) = - 1/2

- 3 1/9 : ( - 1 1/6) = -28/9 * (- 6/7) = 2 2/3