jika 7log 9 = n maka nilai 343log 81 =

[tex]
^343\log{81}\\
=\frac{^7\log{81}}{^7\log{343}}\\
=\frac{^7\log{9^2}}{^7\log{7^3}}\\
=\frac{2\cdot^7\log{9}}{3\cdot^7\log{7}}\\
=\frac{2n}{3}\\
[/tex]