Пошаговое объяснение:
2/15-(-0,2)= 2/15 + 0,2 = 2/15 + 1/5 = 2/15 + 3/15 = 5/15 = 1/3
- 3 7/9-(-5/12)= -3 7/9 + 5/12 = -3 28/36 + 15/36 = -3 13/36
Пошаговое объяснение:
2/15-(-0,2)= 2/15 + 0,2 = 2/15 + 1/5 = 2/15 + 3/15 = 5/15 = 1/3
- 3 7/9-(-5/12)= -3 7/9 + 5/12 = -3 28/36 + 15/36 = -3 13/36