∵1/3x+2x-2/3＞x/2+4/3 ==>7x/3-2/3＞x/2+4/3
==>14x-4＞3x+8
==>11x＞12
==>x＞12/11
∴x＞12/11 ==>3x+5＞0
∵对任意x,│3x-5│与│5-3x│互为相反数,或等于零
∴│3x-5│-│3x+5│-│5-3x│=-│3x+5│
=-(3x+5).