Respuesta :

[tex]\begin{gathered} \frac{2x}{4x+x^2^{}}+\frac{7}{x} \\ \frac{2x}{x(4+x)}+\frac{7}{x} \\ \frac{2}{4+x}+\frac{7}{x} \\ \frac{2x+7x+28}{x(x+4)} \\ \frac{9x+28}{x(x+4)} \end{gathered}[/tex]