The expression $\log_7 7$ can be simplified as follows:

Recall that $\log_b b = 1$ for any positive base $b$. This is because the logarithm asks the question: "To what power must the base be raised to produce the argument?"

In your case:

$\log_7 7 = 1$

This is because $7^1 = 7$.

Would you like further clarification or more examples? Here's a list of related questions you might find interesting:

1. What is $\log_5 5$?
2. How do logarithms with different bases work?
3. What is the property of logarithms when the argument and the base are the same?
4. Can $\log_b b^x$ be simplified? If so, how?
5. How does the change of base formula work?

Tip: Remember that logarithms are the inverse of exponentiation, so understanding how exponentiation works is key to simplifying logarithmic expressions!