A) 2/3:0,2=2/3:2/10=2/3×10/2=10/3=3цел.1/3
б)1,4:2/7=14/10:2/7=14/10×7/2=49/10=4,9
в)8/9:1,6=8/9:16/10=8/9×10/16=10/18=5/9
г)5/6:1,5=5/6:15/10=5/6×10/15=5/15=1/3
д)0,8×4/7=8/10:4/7=8/10×7/4=14/10=1,4
е)5/12:0,01=5/12:1/100=5/12×100/1=500/12=41цел.2/3