Выполните действия: 3 1/5*5/8:2/7 = 26:3 1/4*1/16=. 3/8:1/2+3 1/4 = 5/6:1/3+1 3/8=.

1) 3 1/5 * 5/8 : 2/7 = 16/5 * 5/8 * 7/2 = (16 * 5 * 7) / (5 * 8 * 2) = 7;

Ответ: 7.

2) 26 : 3 1/4 * 1/16 = 26 : 13/4 * 1/16 = 26 * 4/13 * 1/16 = (26 * 4) / (13 * 16) = 8/16 = 1/2;

Ответ: 1/2.

3) 3/8 : 1/2 + 3 1/4 = 3/8 * 2 + 13/4 = 3/4 + 13/4 = 16/4 = 4;

Ответ: 4.

4) 5/6 : 1/3 + 1 3/8 = 5/6 * 3 + 11/8 = 20/8 + 11/8 = 31/8;

Ответ: 31/8.