Question

надо решить примеры

14/14 x 10/49 + 5 3/7
(1 - 3/4) x (4/5 - 3/4)

Answer 1

1 x 10/49 + 5 21/49 = 5 31/49 (вроде так!)
1 x 4/5 - 1 x 3/4 - 3/4 x 4/5 + 3/4 x 3/4 = 4/5 - 3/4 - 12/20 + 9/12 = 48/60 - 45/60 - 36/60 + 45/60 = 12/60 = 1/5 (так?)