Respuesta :
divide 2nd equation by 2
we get
-2x-y=1 and
-2x-y=-1/2
therefor
1=2x-y=-1/2
1=-1/2
false
no solution
B is answer
we get
-2x-y=1 and
-2x-y=-1/2
therefor
1=2x-y=-1/2
1=-1/2
false
no solution
B is answer