Jawabanmu

2014-03-21T20:05:02+07:00
8/9-3/6 = 16/18-9/18 = 7/8
15/14+5/7 = 15/14+10/14 = 25/14
=7/8 x 14/25 = 98/450 (mungkin msh bisa disederhanain)
2014-03-21T20:05:06+07:00
(8/9-3/6) : (15/14+5/7)
=(16/18-9/18) : (15/14+10/14)
=7/18 : 25/14
=7/18 x 14/25
=98/450
=49/225

semoga membantu :)