2 4/9+3 3/9-1 1/9+1 2/9
5 7/9 - 1 1/9 + 1 2/9 = 4 6/9 + 1 2/9 = 5 8/9
24/9+33/9=57/9=6(целых)3/9 57/9-11/9=46/9=5(целых)1/9 46/9+12/9=58/9=6(целых)4/9