Respuesta :

Answer:

-9

Step-by-step explanation:

C + D

-----------

C - D

= 8/11 + 10/11

- - - - - - - - - -

8/11 - 10/11

=18/11

- - - - -

- 2/11

=18/11 x 11/-2

= - 9

Answer:

The answer is -9

Step-by-step explanation:

8/11 + 10/11

8/11 - 10/11

18/11

-2/11

= -9