Odpowiedź:
c)
- 3 5/7 - 6 7/8 = - 3 40/56 - 6 49/56 = - 9 89/56 = - 10 33/56
10 3/5 - 11 5/7 = 10 21/35 - 11 25/35 = - 1 4/35
- 8 4/9 - 13 5/6 = - 8 8/18 - 13 15/18 = - 21 23/18 = - 22 5/18
- 6 1/4 - ( - 3 3/8) = - 6 1/4 + 3 3/8 = - 6 2/8 + 3 3/8 = - 5 10/8 + 3 3/8 =
= - 2 7/8
- 7 5/6 - ( - 10 1/7)= - 7 5/6 + 10 1/7 = - 7 35/42 + 10 6/42 =
= - 7 35/42 + 9 48/42 = 2 13/42
