2x-3y=19 dan 2x+2y=4

2x-3y = 19
2x+2y = 4
---------------- --
-5y = 15
y = 15/-5
= -3
x = 5

2x-3y=19
2x+2y=4. _

-5y=15
y=15/-5
y=-3

2x+2y=4
2x+2(-3)=4
2x-6=4
2x=4+6
2x=10
x=10/2
x=5

hp={5,-3}