2x + 5y = 33 4x + 3y = 31 himpunan penyelesaian =

2x+5y =33(dikali 4)
4x+3y= 31(dikali 2)

= 8x+20y =132
8x+6y= 62 (dikurangi)
= 14y = 70
y= 70/14
y= 5
= 2x+3.5= 31
2x+15=31
2x= 31-15
2x= 16
x= 8

2x + 5y = 33
4x + 3y = 31
2x + 5y = 33 kali 4
4x + 3y = 31 kali 2
8x + 20y = 132
8x + 6y = 62 (Dikurangi)
14y = 70
y = 70/14
y = 5

2x + 3 . 5 = 31
2x + 15 = 31
2x =31 - 15
2x = 16
X = 16/2
X = 8