2 14/15*6 6/11 2 2/25*1 9/16 13/43*8 7/26

а) 2 14/15 * 6 6/11 = 44/15 * 72/11 = 3168/165 сократим на 33 = 96/5 = 19 1/5.

2 14/15 = (2 * 15 + 14) / 15 = 44/15.

6 6/11 = (6 * 11 + 6) / 11 = 72/11.

б) 2 2/25 * 1 9/16 = 52/25 * 25/16 = 1300/400 сократим на 100 = 13/4 = 3 1/4.

2 2/25 = (2 * 25 + 2) / 25 = 52/25.

1 9/16 = (1 * 16 + 9) / 16 = 25/16.

в) 13/43 * 8 7/26 = 13/43 * 215/26 = 2795/1118 сократим на 559 = 5/2 = 2 1/2.

8 7/26 = (8 * 26 + 7) / 26 = 215/26.