(5/14+10/ 21)×18/10+7/6/(13/22–25/33)

Расставим действия:

          1           3          5       4           2

(5/14 + 10/21) * 18/10 + 7/6 : (13/22 – 25/33) = -5,5.

1) 5/14 + 10/21 = 15/42 + 20/42 = 35/42 = 5/6;

2) 13/22 - 25/33 = 39/66 - 50/66 = -11/66 = -1/6;

3) 5/6 * 18/10 = 90/60 = 3/2;

4) 7/6 : (-1/6) = 7/6 * (-6/1) = -7;

5) 3/2 + (-7) = 1,5 + (-7) = -5,5.