himp pers 2x+y=6 dan x-y=-3

2x + y = 6
x - y = -3
-------------- +
3x = 3
x = 3/3
x = 1
dari x - y = -3
1 - y = -3
-y = -3-1
-y = -4
y = 4
HP = { (1, 4) }

2x+ y = 6
x - y = -3
---------------
2x + y 6
2x -2y = -6
3y = 12
y = 4
2x + y = 6
2x +4 = 6
2x = 6 -4
2x = 2
x = 1