Himpunan penyelesaian 1/2x + 1/5y = 2 2/5 dan 1/3x - 2/5y = 8/15 adalah...

1/2x + 1/5y = 12/5
1/3x  - 2/5y = 8/15

5x + 2y = 24
5x - 6y  = 8

8y = 16
y   = 2

5x - 6y  = 8
5x  - 6 * 2 = 8
5x -12 = 8
5x = 20
x = 4

jadi, ( x,y) = (4,2)