Выполните действие;5/7*14/25;4 2/9*1 5/19;8 3/11*1 7/15*10/13
5/7 × 14/25 =70/175 = 2/5 2/9 × 1 5/19 =2/9 × 24/19 =48/171 = 16/57 8 3/11 × 1 7/15 × 10/13 = 91/11 × 22/15 × 10/13 = 182/15 × 10/13 =1820/195= 28/3 = 9 1/3