se simplifica si ramane
[tex] \frac{ \sqrt{x + 4} }{2 \sqrt{x + 4} } = \frac{5 - x}{1} \\ [/tex]
se simplifica iar si ramane
[tex] \frac{1}{2} = \frac{5 - x}{1} = > 10 - 2x = 1 \\ - 2x = 1 - 10 \\ - 2x = - 9 | \times ( - 1) \\ 2x = 9 \\ x = 4.5[/tex]