Решить по действиям пример: 27/34*(5-2 4/5* 1 1/9)

27/34 * (5 - 2 4/5 * 1 1/9) = 2 5/17. 

1). 2 4/5 * 1 1/9 = 14/5 * 10/9 = (14 * 10) / (5 * 9) = 140/45 = 28/9 = 3 1/9; 

2). 5 - 3 1/9 = 5 9/9 - 3 1/9 = 2 8/9; 

3). 27/34 * 2 8/9 = 27/34 * 26/9 = (27 * 26) / (34 * 9) = 702/306 = 2 90/306 = 2 10/34 = 2 5/17.