посчитайте решить 1. 8/25a * 5/56 b =2. 4 4/9 m * 2 5/8 n =3. 5 1/3 x *9y =

) (8/25)а * (5/56)b = (8/25 * 5/56)ab = 1/35ab.

2) 4(4/9)m * 2(5/8)n = (40/9 * 21/8)mn = 35mn/3.

3) 5(1/3)x * 9y = (16/3 * 9)xy = 48xy