Answer:
The answer to your question is: log₇ (
)
Explanation:
log₇ x + log₇ y - log₇ z
First he must use the product rule that says:
log a x + log a y = log a xy
Then, he must use the quotient rule that says
log a x - log a y = log a (

He did not use these rules that's why his answer is incorrect.
The correct answer is:
log₇ (xy) - log₇ z
log₇
