3-x=1/2 x=5/2
x÷5/8=1/12 x=2/15
3/5-3/10×5/6=7/20
3/2-8×5/24=-1/6
5-7/8×40/49-2/7=4
72×(1/8-1/9+1/6)=13
1.3-x=1/2,x=5/2
2.x÷5/8=1/12,x=2/15
3.X/7-X=6/7,x=-1
4.3/5-3/10x5/6=3/5-1/4=7/20
5.3/2-8x5/24=3/2-5/3=-1/6
6.5-7/8x40/49-2/7=5-5/7-2/7=4
7.72X(1/8-1/9+1/6)=9-8+12=13