himpunan penyelesaian dari x/5 - y/6 = 2 dan 3/5x + 2/3y = -1

x/5 - y/6 = 2
6x - 5y = 60... pers.1

3/5x + 2/3y = -1
9x + 10y = -15... pers.2

pers. 1 dan 2 dieliminasi
9x + 10y = -15
12x - 10y = 120 +
         21x = 105
             x = 5

nilai x disubtitusikan ke pers.1
6(5) - 5y = 60
30 - 5y = 60
-5y = 30
y = -6

jadi, HP = ( 5,-6 )