Answer:

-2

Step-by-step explanation:

2x-y=-8-1equation

2x=-8+y

x=-8+y -2equation

2

then, taking 1st equation;

2x-y=-8

2(-8+y/2)-y=-8

-16+2y-y=-8

4

-16+2y–4y=-8

4

-16-2y=-8*4

-2y=-32+16

y=-16/-2

y=4

for x

x=-8+y

2

x=-8+4

2

x=–4

2

x=-2