Выполните действия 3/25*5/6*10/9 3/8*2/15:7/20
3/25*5/6*10/9 =1/25*5/2*10/9 =1/5*1/2*10/9 =1/1*1/2*2/9 =1/1*1/1*1/9 =1/9 3/8*2/15:7/20=3/8*2/15*20/7=1/8*2/5*20/7=1/8*2/1*4/7=1/2*2/1*1/7= =1/1*1/1*1/7=1/7
спасибо
1) 2)