The expression $-2 + \left(-\frac{1}{3}\right)$ can be simplified by combining the two numbers.

$-2 + \left(-\frac{1}{3}\right) = -2 - \frac{1}{3}$

To add these, convert them into fractions with the same denominator:

$-2 = -\frac{6}{3}$

Now, combine the fractions:

$-\frac{6}{3} - \frac{1}{3} = -\frac{7}{3}$

So, $-2 + \left(-\frac{1}{3}\right) = -\frac{7}{3}$, or approximately $-2.33$.

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Here are 5 related questions:

1. How do you convert whole numbers to fractions?
2. What is the process for adding and subtracting fractions?
3. Can you explain why finding a common denominator is important?
4. How do you convert a mixed fraction into an improper fraction?
5. How would you simplify more complex expressions involving fractions?

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