Question 706216
 1/3 log7(x)+2log7(z)-log7(y)
I'll assume you meant log base 7:
{{{(1/3)*log(7,x)+2*log(7,z)-log(7,y)}}}
{{{log(7,x^(1/3))+log(7,z^2)-log(7,y)}}}
{{{log(7,x^(1/3)z^2)-log(7,y)}}}
{{{log(7,x^(1/3)z^2/y)}}}