Respuesta :

Answer:

0

Step-by-step explanation:

to simplify distribute the negative sign

x + 4 - (x - 4)

x + 4 - x + 4; which cancels the x and 4

0

Answer:

8

Step-by-step explanation:

-(x-4) : -x+4

x+4 -x+4

simplify: x+4 -x+4=8