а)8/9:6
б)15*5/6
в)1:3/7
г)2/5*12
д)2 7/9*15
е)3 1/3:30

8/9 : 6 = 8/54 = 4/27
15 • 5/6 = 75/6 = 12 3/6 = 12 1/2
1 : 3/7 = 7/3 = 2 1/3
2/5 • 12 = 24/5 = 4 4/5
2 7/9 • 15 = 25/9 • 15 = ( 25•5)/3 = 125/3 = 41 2/5

А)4/27 б)12 1/2 в)3/7 г)4 4/5 д)16 2/3 е)1/9