Jawabanmu

2014-09-04T09:18:36+07:00
3ab - 4bc + 2ab - 5bc = 5ab - 9bc
1 5 1
2014-09-04T09:19:02+07:00
3ab + 2ab - 4bc - 5 bc = 5ab - 9 bc
1 5 1