一、2x-3/5<x-1/2x<3/5-1/2=1/10∴x<1/10二、2x-1/3-10x+1/6≥5x/4-52x-10x-5x/4≥1/3-5-1/6-37x/4≥1/3-5-1/637x/4≥5+1/6-1/3=29/6x≥29*4/(37*6)=58/111∴x≥58/111三、x+2(x-1)≤4,1+4x/3>x∵x+2(x-1)≤4∴3x-2≤4∴x≤2∵1+4x/3>x∴x/3>-1∴x>-3