-x+m/3-m-1/2=m-x-2m/3-1/2=0x+2m/3+1/2=0x=-1/2-2m/3因为x是非负数所以x大于等于0所以-1/2-2m/3大于等于0所以m小于等于-3/4赞同0| 评论
(x+m)/3-(2x-1)/2=m2(x+m)-3(2x-1)=6m2x+2m-6x+3=6m-4x=4m-3x=(3-4m)/4<03-4m<0m>3/4
