hasil metode eliminasi 2x+y=4 dan x+2y=-7 pake cra ya plzz

2x+y=4. / kali 1
x+2y= -7. / kali 2
_________-
eliminasi
2x+y= 4
2x+4y= -14
_____________-
-3y = 18
y = 18/-3
y= -6
subtitusi
2x+y= 4
2x+(-6)= 4
2x-6=4
2x= 4+6
2x= 10
x = 10/2
x = 5
hp= { y= -6 , x= 5 }