2 7/12 + 6 8/9 - ( - 3 1/3) =
1) 5 - 1 7/36 = 3 29/36
2) 3 29/36 - 3 1/3 = 17/36
3) 2 7/12 + 6 8/9 = 9 17/36
4) 9 17/36 - 17/36 = 9
2 7/12 + 6 8/9 - ( - 3 1/3) =
1) 5 - 1 7/36 = 3 29/36
2) 3 29/36 - 3 1/3 = 17/36
3) 2 7/12 + 6 8/9 = 9 17/36
4) 9 17/36 - 17/36 = 9