1) 2 2/5 * 5/24 2) 3/8 * 4 4/15
3) 1 1/6 * 1 5/7 4) 9 3/8 * 2 2/5
5) 4 5/12 * 6/53 6) 2 5/11 * 1 19/36

Пошаговое объяснение:

1) 12/5*5/24=1/2

2) 3/8*64/15=8/5

3) 11/6*12/7=22/7

4) 75/8*12/5=45/2

5) 53/12*6/53=1/2

7) 27/11*55/36=15/4

вот все так сократятся

1) 2 2/5 · 5/24 = 12/5 · 5/24 = (1·1)/(1·2) = 1/2

2) 3/8 · 4 4/15 = 3/8 · 64/15 = (1·8)/(1·5) = 8/5 = 1 3/5

3) 1 1/6 · 1 5/7 = 7/6 · 12/7 = (1·2)/(1·1) = 2

4) 9 3/8 · 2 2/5 = 75/8 · 12/5 = (15·3)/(2·1) = 45/2 = 22 1/2

5) 4 5/12 · 6/53 = 53/12 · 6/53 = (1·1)/(2·1) = 1/2

6) 2 5/11 · 1 19/36 = 27/11 · 55/36 = (3·5)/(1·4) = 15/4 = 3 3/4