Question

(3 311 * 1 29 - 2 38) * 1639

всё дроби

Answer 1

(3 311 * 1 29 - 2 38) * 1639

 3 3/11 * 1 2/9 =  36/11 * 11/9  = 4

4 - 2 3/8 = 3 8/8 - 2 3/8 = 1 5/8

1 5/8 * 16/39 = 13/8 * 16/39 = 2/3