Tentukan himpunan dari sistem persamaan 2x-3y=23 dan 2x+8y=10

2x - 3y = 23
2x + 8y = 10
------------------(-)
- 11y = 13
y = - 13/11
y = - 1 2/11

2x - 3y = 23 |×8
2x + 8y = 10 |×3
maka
16x - 24y = 184
6x + 24y = 30
----------------------(+)
22x = 214
x = 214/22
x = 9 16/22
x = 9 8/11

hp = ( 9 8/11 , - 1 2/11)