Odpowiedź:
3 i 5/7 - 6 i 7/8 = 3 40/56 - 6 49/56 = -3 9/56
10 i 3/5 - 11 5/7 = 10 21/35 - 11 25/35 = -1 4/25
-8 4/9 - 13 5/6 = -8 8/18 - 13 15/18 = -5 7/18
6 i 1/4 - (-3 i 3/8) = 6 2/8 + 3 3/8 = 9 5/8
-7 i 5/6 - (-10 i 1/7) = -7 35/42 + 10 6/42 = -7 35/42 + 9 41/42 = 2 6/42 = 2 1/7
Szczegółowe wyjaśnienie:
