What is the expand, and condense of: log_7 (x^3/y)^3



are these correct?

expand: 3 log_7 (x^3) – 3 log_7 (y)

condense: log_7 (x^9/y^3)

If your original was

log7( (x^3/y)^3 )
then your last line of
3 log7 (x^3) – 3 log7 (y)

can be taken one step further to
9 log7 x - 3 log7 y

I agree with your other result