a. 4x - 3y = 15 dan -3x + 2y = -12

• Eleminasi x

4x - 3y = 15 | × 3 |

-3x + 2y = -12 | × - 4 |

12x - 9y = 45

12x - 8y = 48

____________(–)

-y = -3

y = 3

•substitusikan y = 3 kepersamaan 4x - 3y = 15

4x - 3y = 15

4x - 3.3 = 15

4x - 9 = 15

4x = 15 + 9

4x = 24

x = 6

Hp = { (6,3) }

b. 2x + 3y = 12 dan 4x - 7y = -2

• Eleminasi y

2x + 3y = 12... | × 2 |

4x - 7y = -2... | × 1 |

4x + 6y = 24

4x - 7y = -2

___________(–)

13y = 26

y = 2

•substitusikan y = 2 kepersamaan 2x + 3y = 12

2x + 3y = 12

2x + 3.2 = 12

2x + 6 = 12

2x = 12 - 6

2x = 6

x = 3

Hp = { ( 3,2) }