А) 1-1/5 / 2=5/5-1/5=4/5:2=4/5:2/1=8/5=1 3/5;
б) 6 / 1-1/3=3/3-1/3=2/3=6:2/3=6/1×3/2=18/2=9;
в) 2/3+1/6 / 3=2/3+1/6=4/6+1/6=5/6:3=5/6×1/3=5/18;
г) 1-1/6 / 2+ 1/6=6/6-1/6:2+ 1/6=5/6:2+1/6=5/6×1/2=5/12+1/6=5/12+2/12=7/12;
д) 17/100-1/10 / 10=17/100-10/100:10=7/100:10=7/100×1/10=7/1000;
е) 1/4+2/3 / 2-1/6=3/12+8/12:2-1/6=11/12:2-1/6=11/12×1/2=11/24-1/6=11/24-4/24=7/24.