19/35: (1 1/5+2/3); (11 5/8+ 7 1/6): 3 5/12; (8 7/12-2 5/8): 2 1/6

1 1/5+2/3=18/15+10/15=28/15 
19/35:28/15=19/35*15/28=57/196

93/8+43/6=558/48+344/48=902/48
902/48:3 5/12=902/48:41/12=902/48*12/41=22/4=5 2/4

8 7/12-2 5/8=103/12-21/8=412/48-126/48=286/48
286/48:2 1/6=286/48:13/6=286/48*6/13=22/8=2 6/8=2 3/4