\[ y'(x)=\frac {e^{\frac {y(x)}{x}} \left (x^3+x e^{-\frac {y(x)}{x}}+e^{-\frac {y(x)}{x}} y(x)\right )}{x} \] ✓ Mathematica : cpu = 0.0989701 (sec), leaf count = 28
\[\left \{\left \{y(x)\to -x \log \left (\frac {e^{3 c_1}-x^3}{3 x}\right )\right \}\right \}\]
✓ Maple : cpu = 0.07 (sec), leaf count = 19
\[ \left \{ y \left ( x \right ) =\ln \left ( 3\,{\frac {x}{-{x}^{3}+{\it \_C1}}} \right ) x \right \} \]