Question

Dengan metode gabungan tentukan himpunan penyelesaian 3x-2y=16 dan 5x+y=18

Answer 1

Verified answer

SPLDV

3x – 2y = 16 .... ×1
5x + y = 18 ....... ×2

Eliminasi
3x – 2y = 16
10x + 2y = 36
___________ +
13x = 52
x = 52/13
x = 4

Substitusi
3x – 2y = 16
3(4) – 2y = 16
12 – 2y = 16
–2y = 16 – 12
–2y = 4
y = 4/–2
y = –2

HP = {4, –2}