Tentukan himpunan penyelesaian dari sistem persamaan: 2×+5y=-3 3×-2y=5

2x + 5y = -3 | x 3|
3x - 2y = 5 | x 2 |

6x + 15 y = -9
6x - 4 y = 10
___________ -
19 y = - 19
y = -1

2x + 5y = -3
2x + 5.-1 = -3
2x -5 = -3
2x = 2
x = 1

Hp = {1 , -1}

2x + 5y = 3 × 2 , 4x + 10y = 6
3x - 2y = 5 × 5 , 15x - 10y = 25
__________ +
19x + 0 = 31
x = 31/19
2y = 3x - 5, y = 3/2x - 5/2
y = 3/2(31/19) - 5//2
y = 93/38 - 5/2 , y = 93/38 - 5(19)/38
y = (93 - 95)/38 , y = -2/38 , y = -1/19