4-1/9 6-3/7 и еще один номер:6-3 2/5 8-3 3/4

4-1/9 = 3 +1 -1/9 =3+8/9 = 3 8/9 6 - 3/7 = 5+1-3/7=5+4/7 = 5 4/7 6 - 3 2/5= 5 5/5-3 2/5 = 2 3/5 8 - 3 3/4 = 7 4/4 - 3 3/4 = 4 1/4