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x/5=y/3
x=5y/3
x/(x+y)+y/(x-y)-y^2/(x^2-y^2)
=[x(x-y)+y(x+y)-y²]/(x+y)(x-y)
=x²/(x²-y²)
=(25y²/9)/(25y²/9-1)
=25/16
x=5y/3
x/(x+y)+y/(x-y)-y^2/(x^2-y^2)
=[x(x-y)+y(x+y)-y²]/(x+y)(x-y)
=x²/(x²-y²)
=(25y²/9)/(25y²/9-1)
=25/16
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