计算3x/8y×16y²/27x² （2xy-x²）÷x-2y/xy 2x-6/x²-4x+4×2x-4/x-3

计算3x/8y×16y²/27x² （2xy-x²）÷x-2y/xy 2x-6/x²-4x+4×2x-4/x-3

3x/8y×16y²/27x²
=2y/9x
（2xy-x²）÷x-2y/xy
=-x(x-2y)×xy/(x-2y)
=-x²y
2x-6/x²-4x+4×2x-4/x-3
=2(x-3)/(x-2)²×2(x-2)/(x-3)
=4/(x-2)

孩子 不要在网上找答案