Question 1209408
{{{(xyz)(x/y-y/x)=(xyz)(1/z)}}}

{{{x^2z-y^2z=xy}}}

{{{x^2z-y^2z-xy=0}}}

{{{-y^2z-xy+x^2z=0}}}

{{{y^2z+xy-x^2z=0}}}


{{{y=(-x+- sqrt(x^2+4zx^2z))/(2z)}}}


{{{highlight(y=(-x+- x*sqrt(1+4z^2))/(2z))}}}