kak tlg jawab yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa :)

..........................

Mapel : Matematika
Bab : Sistem Persamaan Linear Dua Variabel

Diketahui :
- 1/4x - 1/6y = - 6
- 1/8x + 1/3y = 2

Ditanya :
- Nilai x = .....?
- Nilai y = .....?

Penyelesaian :
- Nilai x :
1/4x - 1/6y = - 6
12(1/4x - 1/6y = - 6)
3x - 2y = - 72

1/8x + 1/3y = 2
24(1/8x + 1/3y = 2)
3x + 8y = 48

(3x - 2y = - 72) × 8
(3x + 8y = 48) × 2

24x - 16y = - 576
6x + 16y = 96
____________ +
30x = - 480
x = - 480/30
x = - 16

- Nilai y :
3x - 2y = - 72
3(- 16) - 2y = - 72
- 48 - 2y = - 72
- 2y = - 72 + 48
- 2y = - 24
y = - 24/- 2
y = 12

Maaf Kalau Salah