Jawabanmu

2014-08-12T19:29:24+07:00
   3(2x - 6y) - 5(x + 2y)
= 6x - 18y - 5x - 10y
= 6x - 5x - 18y - 10y
= x - 8y
Kalau nggak salah sih gitu..
1 4 1
2014-08-12T19:30:09+07:00