1 1/9 + 2,75 + 1/3 == 1 1/9 + 2 75/100 + 1/3 == 1 1/9 + 2 3/4 + 1/3 == (1 1/9 + 3/9) + 2 3/4 == 1 4/9 + 2 3/4 = 1 16/36 + 2 27/36== 4 7/362,25 + 11 1/15 - 7 1/6 == 2 1/4 + 11 1/15 - 7 1/6 == 2 15/60 + 11 4/60 - 7 10/60 == 6 9/60 = 6 3/20 =6,157,6 - 4 2/3 + 2 1/15 = = 7 3/5 - 4 2/3 + 2 1/15 == 7 9/15 - 4 10/15 + 2 1/15 == 58,5 + 5/6 - 6,25 = = 8 1/2 + 5/6 - 6 1/4 == 8 6/12 + 10/12 - 6 3/12 == 3 1/122,25 + 11 1/15 - 7 1/6 == 2 1/4 + 11 1/15 - 7 1/6 == 6 3/20 = 6,156,8 - 2 1/3 + 1,2 == 6 4/5 - 2 1/3 + 1 1/5 == 6 12/15 - 2 5/15 + 1 3/15 == 5 10/15 = 5 2/3