а) 40 5/106 - 11 3/106 = (40 - 11) + (5/160 - 3/160) = 29 + 5/1696 = 29 5/1696(это дробь)
б) 25 7/32 - 21 1/24 = (25 - 21) + (7/32 - 1/24) = 4 + 17/96 = 4 17/96(это дробь)
а) 40 5/106 - 11 3/106 = (40 - 11) + (5/160 - 3/160) = 29 + 5/1696 = 29 5/1696(это дробь)
б) 25 7/32 - 21 1/24 = (25 - 21) + (7/32 - 1/24) = 4 + 17/96 = 4 17/96(это дробь)