himpunan penyelesaian 4x-5y=22dan7x+3y=15adalah

4x - 5y = 22 |×3
7x + 3y = 15 |×5
12x - 15y = 66
35x + 15y = 75
-----------------------(+)
47x = 141
x = 3

4x - 5y = 22
4(3) - 5y = 22
- 5y = 22 - 12
- 5y = 10
y = - 2

hp = {3,-2}