2x-4分之3-x除以[x+2-x-2分之5]
=(3-x)/(2x-4)÷[(x+2)-5/(x-2)]
=(3-x)/2(x-2)÷(x²-4-5)/(x-2)
=(3-x)/(x²-9)
=-(x-3)/(x-3)(x+3)
=-1/(x+3)