Respuesta :

The answer is 4 because you have to add everything up and then divide it by how many numbers there is

Answer:

0

Step-by-step explanation:

3+7+4+2= 16

16/4= 4

3-4= -1

7-4= 3

4-4= 0

2-4= -2

-1+3+0+-2= 0