Verified answer

Ответ:

Пошаговое объяснение:

1) 3/5 *  4/9 + 1 1/3 = 3/5 * 4/9 + 4/3 = 1/5 * 4/3 + 4/3 = 4/15 + 4/3 = 4/15 + 20/15 = 24/15 = 8/5 = 1 3/5

2) 1 1/4 * 2/5 – 1/3 = 5/4 * 2/5 – 1/3 = 1/2 * 1/1 – 1/3 = 1/2 - 1/3 = 3/6 – 2/6 = 1/6

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

4) 6/5 : 1/3 + 1 3/8 = 6/5 * 3 + 11/8 = 5/2 * 1 + 11/8 = 5/2 + 11/8 = 20/8 + 11/8 = 31/8 = 3 7/8

5) 1 2/5 : 5/7 + 3/8 = 7/5 * 7/5 + 3/8 = 49/25 + 3/8 = 392/200 + 75/200 =

467/200 = 2 67/200

6) 2 1/3 : 1 5/9 - 5/6 = 7/3 * 9/14 - 5/6 = 1/1 * 3/2 - 5/6 = 3/2 - 5/6 = 9/6 - 5/6 =

4/6 = 2/3