-30
Пошаговое объяснение:
1) -5/11 : (-13/33) = -5/11 * (-33/13) = -5/1 * (-3/13) = 15/13
2) 15/13 * 78 = 15*6/1 = 90/1 = 90
3) -17/15 + 3. 2/5 = -17/15 + 3. 6/15 = -17/15 + 2. 21/15 = 2. 4/15
4) 90 : 2. 4/15 = 90 : 34/15 = 90 * 15/34 = 45 * 15/17 = 675/17
5) 675/17 : (-45/34) = 675/17 * (-34/45) = 15/1 * (-2/1) = -30/1 = -30
