37:2целых3 /17-17,8+1целых 2/7
1) 37 : 37/17 = 37/1 * 17/37 = 17
2) 17 - 17,8 = - 0,8
3) - 0,8 + 9/7 = - 8/10 + 9/7 = 90/70 - 56/70 = 34/70 = 17/35