Respuesta :

Answer:

4

Step-by-step explanation:

a=3

b=1

c=-1

(b + c) - (c-a)

(1+(-1))-((-1)-(3))

Note

+*-= -

+*+=+

-*-=+

So

(1-1)-(-1-3)

0-(-4)

4

Answer:

(1 - 1) - (-1 - 3)

0 + 4 = 4

Step-by-step explanation: