dng caranya 11 x - 2y =-69 5x + 6y = 17

Materi : Program Linear
Bahasan : Persamaan Linear 2 Variabel
Jawaban : HP = {- 5, 7}

Langkah - langkah :
11x - 2y = - 69
11x = - 69 + 2y
x = (- 69 + 2y) / 11
Substitusi ke 5x + 6y = 17
5((- 69 + 2y) / 11) + 6y = 17
KPK = 11
- 345 +10y + 66y = 187
76y = 532
y = 7
Substitusi ke 11x - 2y = - 69
11x - 2(7) = - 69
11x - 14 = - 69
11x = - 55
x = - 5