Question

x-y=8
2x+y=4

Answer 1

add the 2 equations, what u get ?

Answer 2

x-y=8
2x+y=4
3x=12
3 =3
x=4

Answer 3

that is correct! good :)
what about y ?

Answer 4

4-y=8
-4 -4
-y=4
-1=-1
y=-4

Answer 5

good work :)
those are correct.

Answer 6

ohhh thank you so much...at first I thought it was wrong, but nevermind...anyways, thanks for the help hartnn

Answer 7

welcome ^_^