Question

Tentukan himpunan penyelesaian menggunakan sistem eliminasi
1.1/3x - 1/2y = 7/6
1/2x + 1/4y = -5/4

Answer 1

1/3x - 1/2y =7/6
1/2x+ 1/4y =-5/4 dikalikan 2

1/3x - 1/2y =7/6
x - 1/2y = -10/4
----------------------- (+)
4/3x =14/12 - 30/12
4/3x = -16/12
x = -16/12 × 3/4
x = -1

1/2x +1/4y =-5/4
-1/2 + 1/4y =-5/4
1/4y = -5/4 + 1/2
1/4y = -5/4 +2/4
1/4y = -3/4
y = -3/4 × 4
y =-3