Jawapan

2016-09-29T23:15:34+08:00
2x + 3y = 13
4 + 3y = 13
3y = 13 - 4
3y = 9
y = 9รท3 = 3
2016-09-30T12:24:47+08:00
Whatsapp akak ni 0172847059 dia buat tuisyen online