Question

помогите сделать пж пж ​

Answer 1

Ответ:

1) - 33/320. 4) 27. 5) 1 1/5.

Пошаговое объяснение:

1) 21/25 * 5/7 - 3/16 * 4/15 = 21/5 * 1/7 - 45/64 = 21/35 - 45/64 = 3/5 - 45/64 = 192/320 - 225/320 = - 33/320.

4)(1 14/17 - 1 1/34) * 34 = (1 28/34 - 1 1/34) * 34 = 27/34 * 34 = 27.

5) (6 7/12 - 5 11/15) * (1 10/17 - 3/17) =

= (6 35/60 - 5 44/60) * 1 7/17=

= 51/60 * 24/17 = 3/15 * 6/1 = 18/15 = 1 3/15 = 1 1/5.