Пошаговое объяснение:
1) = -22/72 - 51/72 = -73/72 = -1 1/72
2) = 21/30 - 26/30 = -5/30 = -1/6
3) = -4/18 - 5/18 = -9/18 = -1/2
4) = -2/6 + 5/6 = 3/6 = 1/2
Пошаговое объяснение:
1) = -22/72 - 51/72 = -73/72 = -1 1/72
2) = 21/30 - 26/30 = -5/30 = -1/6
3) = -4/18 - 5/18 = -9/18 = -1/2
4) = -2/6 + 5/6 = 3/6 = 1/2