Respuesta :

Answer:

11.7

Step-by-step explanation:

-11+14.9= 3.9

3.9-(-7.8)= 11.7

Answer:

11. 7

Step-by-step explanation:

w + x - y

-11 + 14.9 - (-7.8)

-11 + 14.9 + 7.8

3.9 + 7.8

11.7