Пошаговое объяснение:
№2
1) 9:3/4 = 9*4/3 = 9*4 3 = 36/3 = 12
2) 2:8/17 = 2*17/8 = 2·17 8 = 34/8 = 17/4 = 4.25
3) 9/16:36 = 9/16*36 = 9/576 = 1/64 = 0.015625
4) 26/16:12/8=78/2=39
5) 4/3:12/7=21/3=7
6) 18/7:9/28=2/4=1/2(0,5)
