The expression $\left(-\frac{9}{2}\right) + \left(-\frac{5}{2}\right)$ can be simplified by combining the two fractions.

Since the denominators are the same, you can add the numerators directly:

$\frac{-9}{2} + \frac{-5}{2} = \frac{-9 + (-5)}{2} = \frac{-14}{2} = -7$

So, $\left(-\frac{9}{2}\right) + \left(-\frac{5}{2}\right) = -7$.

Would you like more details or have any questions?

Here are 5 related questions:

1. How would you subtract $\left(-\frac{7}{3}\right) - \left(\frac{2}{3}\right)$?
2. What is the sum of $\left(\frac{3}{4}\right) + \left(-\frac{5}{4}\right)$?
3. How do you simplify the expression $\frac{8}{3} - \frac{5}{3}$?
4. How do you add $\frac{7}{2}$ and $\frac{9}{4}$?
5. What is the result of $\left(-\frac{12}{5}\right) + \left(-\frac{8}{5}\right)$?

Tip: When adding or subtracting fractions, make sure the denominators are the same before combining the numerators.