How do you solve #log_x7 = 1#?
Taking exponentiel both side
Consider powers of 10
Picking one at random
If this were to be written as log base 10 it would be:
Following the same approach for your question but in you case we could reverse the process to get something we can work out.
Anything raised to the power of one is its own value
This means that if z is any number (technically you would have to say that