Упростите выражение. 1) (8/25)а * (5/56)b = (8/25 * 5/56)ab = 2) 4(4/9)m * 2(5/8)n = 3) 5(1/3)x * 9y =

1) (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