помогите
а)5 3/5 - 1 4/5
b)4 5/11 - 2 8/11
d)4 - 5/9

a) 5 3/5 - 1 4/5 = 28/5-9/5 = 19/5= 3 4/5б) 4 5/11-2 8/11 = 49/11-30/11= 19/11 = 1 8/11в) 4-5/9= 3 9/9-5/9=3 4/9