Answer:
[tex] x = 6 \\ y = 9[/tex]
Step-by-step explanation:
[tex]2x - y - (x - y) = 3 - ( - 3) \\ 2x - y - x + y = 6 \\ x = 6[/tex]
[tex]2x - y = 3 \\ 2 \times 6 - y = 3 \\ 12 - y = 3 \\ - y = 3 - 12 \\ - y = - 9 \\ y = 9[/tex]
[tex] x - y = - 3 \\ 6 - 9 = - 3 \\ - 3 = - 3[/tex]
hope this helps you,! have a nice day!!