(3/4*5/13:25/13 = 3/20)
(4/21:16/5:7/12 = 5/49)
(6/7*8/9:14/15 = 40/49)
(4/15*15/22:3/2 = 4/33)
(9/14:26/57/1513/9 = 1/12)
(1/5*2/15:14/15 = 1/35)
(3/4*5/13:25/13 = 3/20)
(4/21:16/5:7/12 = 5/49)
(6/7*8/9:14/15 = 40/49)
(4/15*15/22:3/2 = 4/33)
(9/14:26/57/1513/9 = 1/12)
(1/5*2/15:14/15 = 1/35)