Respuesta :

quimbap

Answer:

x= 12  y= -3

Step-by-step explanation:

Rearrange.

x+y=9

x-y=15

Get x by itself, cancel out the y's and you'll get this:

2x=24

x= 12

Plug it in.

12+y=9

Get y.

y= -3

Check your work. I hope this helped.