Nilai x dan y yang memenuhi sistem persamaan: 2x - y = 6 3x + 2y = 2

2x - y = 6 |x2| 4x -2y = 12
3x + 2y = 2 |x1| 3x + 2y = 2
----------------- +
7x = 14
x = 14/7 = 2
2x - y = 6 |x3| 6x -3y = 18
3x + 2y = 2 |x2| 6x + 4y = 4
----------------- -
-7y = 14
y = 14/-7= -2
Pembuktian. :
I . 2x - y = 6
2.(2) - (-2) = 6
II. 3x + 2y = 2
3.(2) + 2(-2) = 2