\[
\boxed{
 \left( x{{\rm e}^{y \left( x \right) }}+{{\rm e}^{x}} \right) {\frac {\rm d}{{\rm d}x}}y \left( x \right) +{{\rm e}^{y \left( x \right) }}+y \left( x \right) {{\rm e}^{x}}=0}
\]