Question

Bantuu Saya
Himpunan Penyelesaian 2x + 3y= -4 dan 5x - y= 7 sama caranya yaa

Answer 1

1) -1xy/-1=-4/-1
xy=4
hp (xy=4)
2) 5x-y=7
5xy/5=7/5
xy=7/5
hp (xy=7/5

Answer 2

2x + 3y = -4 | 1 | 2x + 3y = -4
5x - y = 7 | 3 | 15x -3y = 21 +
17x = 17
x = 1
2x + 3y = -4
2(1) + 3y = -4
2 + 3y = -4
3y = -4 -2
3y = -6
y = -6/3
= -2
insyaallah betul mohon di cek ulang