25/14умножить 2 6/11 минус 9/25 умножить 1 2/3

2 5/14 * 2 6/11 - 9/25 * 1 2/3 = 5 2/5
1) 2 5/14 * 2 6/11 = 33/14 * 28/11 = (3*2)/(1*1) = 6
2) 9/25 * 1 2/3 = 9/25 * 5/3 = (3*1)/5*1) = 3/5
3) 6 - 3/5 = 5 5/5 - 3/5 = 5 2/5