Jawabanmu

2014-09-11T23:38:28+07:00
1/3 : 4/5 
= 1/3 x 5/4
= 5/12

2/7 : 3/4
= 2/7 x 4/3
= 8/21
1 5 1
2014-09-11T23:39:18+07:00
1/3 : 4/5 = 1/3 x 5/4
              = 5/12

2/7 : 3/4 = 2/7 x 4/3
              = 8/21