Jawabanmu

2014-02-08T18:57:53+07:00
8 19/20 + 9/15 = ....
=  179/20 + 9/15
=   537/60 + 36/60
=  573/60
=  9 33/60
2014-02-08T19:00:03+07:00
57+36/60 = 93/60 = 1 33/60 + 8 = 9 33/60