Find the Excluded Values (2x-3)/(x+4)+(4x-5)/(x+4)

$\frac{2 x - 3}{x + 4} + \frac{4 x - 5}{x + 4}$

Set the denominator in $\frac{2 x - 3}{x + 4}$ equal to $0$ to find where the expression is undefined.

$x + 4 = 0$