6 1/3 - 8 = - 1 2/3
- 2 2/7 + 4 3/5 = - 2 10/35 + 4 21/35 = 2 11/35
5 1/3 - 6 1/4 = 5 4/12 - 6 3/12 = - 11/12
3/8 : (- 9/16) = 3/8 * (- 16/9) = 2/3
5/12 * (- 6) = 5*6/12 = 5/2 = 2 1/2
- 3 2/9 * 3 = - 9 6/9 = - 9 2/3
- 16 : (- 4,9) = - 16 : (- 49/10) = - 16 * (- 10/49) = 160/49 = 3 13/49
3 1/2 * (- 1 3/7) = 7/2 * (- 10/7) = - 5