Пошаговое объяснение:
2 7/9 * 18/25 : (7/12 - 3/5) = -120,
1) 7/12 - 3/5 = 35/60 - 36/60 = -1/60,
2) 2 7/9 * 18/25 = 25/9 * 18/25 = 18/9 = 2,
3) 2 : (-1/60) = -2 * 60 = -120
