Ответ:
15 - 9/40 - 11 - 3/8 - 1/125 = 4 - 9/40 - 3/8 - 1/125
4 - 9/40 - 15/40 - 1/125 = 4 - 24/40 - 1/125 = 4 - 3/5 - 1/125
20/5 - 3/5 - 1/125 = 17/5 - 1/125 = 850/125 - 1/125 = 849/125
15 - 9/40 - 11 - 3/8 - 1/125 = 4 - 9/40 - 3/8 - 1/125
4 - 9/40 - 15/40 - 1/125 = 4 - 24/40 - 1/125 = 4 - 3/5 - 1/125
20/5 - 3/5 - 1/125 = 17/5 - 1/125 = 850/125 - 1/125 = 849/125