17 1/8-(12 2/5-5 7/8)*16/24+3 3/8=7 29/60
1) 12 2/5-5 7/8=12 16/40+5 35/40=17 51/40=18 11/40
2) 18 11/40*16/24=731/40*16/24=1462/120=12 11/60
3) 17 1/8-12 11/60=17 15/120-12 22/120=16 135/120-12 22/120=4 13/120
4) 4 13/120+3 3/8=4 13/120+3 45/120=7 58/120=7 29/60