Write the expression as a single logarithm Log7X+log7Y-log7Z

For this, simply use the rules of logs:

- Adding logs of the same base (which is 7 here) is the same as multiplying

-Subtracting logs of the same base is dividing

So the single log would be:

log₇ (x*y/z) which is the same as

log₇ (xy/z)