Jawabanmu

2014-09-07T13:50:45+07:00
4/5x3/1=4/5x15/5=60/5=12/1/12^-1


2 2 2
2014-09-07T13:51:26+07:00
4/5 : 1/3
4/5 X 3/1
12/5
2 2/5
2 4 2