Answer:
x=0 y=-3
Explanation:
2x-y-3 =0
4x+y+3=0
Add the two equations together to eliminate y
2x-y-3 =0
4x+y+3=0
------------------------
6x +0y+0=0
6x = 0
Divide each side by 6
6x/6 =0/6
x =0
Now we can find y
2x-y-3 =0
2(0)-y -3 =0
-y-3 =0
Add y to each side
-y+y -3=0+y
-3 =y