А) 3 1/2 - 5/9= 7/2 - 5/9= 63/18 - 10/18= 53/18= 2 17/18 б) 1 1/4 - 1/3= 5/4 - 1/3= 15/12 - 4/12= 11/12 в) 1 13/15 - 2/5= 28/15 - 2/5 = 28/15 -6/15= 22/15= 1 7/15 г) 1 1/3 - 5/6= 4/3 -5/6= 8/6 - 5/6 = 3/6= 1/2 д) 2 3/10 - 4/15= 23/10 - 4/15 = 138/60 - 16/60= 122/60 = 61/30= 2 1/30 е) 3 1/8 - 1/6= 25/8 - 1/6= 150/48 - 8/48= 142/48= 2 46/48= 2 23/24