Respuesta :

Answer:

add 4 so -1/2a=8

mult both sides by 2 so

-1a=16

divide 16 and -1

a = -16

Step-by-step explanation:

Answer:

a=-32

Step-by-step explanation:

-1/4a-4=4

      +4+4

-1/4a=8

x-4  x-4

a=-32