Respuesta :

vidalmari6p99qfk

Answer:

1 and 2 answers are correct

Step-by-step explanation:

2x-y= -8

x-y = -4

ADD BOTH (y is cancelled)

3x= -12

x= -4

-8+y=-8

y=0

    -4-y = -4

     Multiply all by -1

4+y=4

y=0