himpunan penyelesaian dari [tex]2x - 3y = 7 3x + 2y = 4 [/tex]

jawab

2x - 3y = 7....kali3
3x + 2y = 4...kali 2

6x - 9y = 21
6x + 4y = 8 
....-13y = 13
y = -1

2x - 3y = 7
2x + 3 =7
2x = 4
x = 2

(x,y)= (2, -1)