1, x-2/3=-2/5+5/6 2, x/-2=-18/x 3, 2x-7=-6/15:2/5 4, -11/12+5/6<x/36<7/9-3/4 5, 59/x=11/4+13/6 6, x/15=3/4+ -17/20 7, x/3+x/4=21/12 8, x-3/-2=-8/x-3 9, x+5/3=5/9 10, x-2/27=3/x-2 giúp mình