求一道化简求值

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求一道化简求值求一道化简求值求一道化简求值5x+3y=0x=-3y/5y/x=-5/3[2/3x-2/(x+y)((x+y)/3x-x-y)]/((x-y)/x)=[2/3x-2/3x+2]/((x-

求一道化简求值
求一道化简求值

求一道化简求值
5x+3y=0
x=-3y/5
y/x=-5/3
[2/3x-2/(x+y)((x+y)/3x-x-y)]/((x-y)/x)
=[2/3x-2/3x+2]/((x-y)/x)
=2*x/(x-y)
=2x/(x-y)
=2/(1-y/x)
=2/(1+5/3)
=2/(8/3)
=3/4