a log81=4/3 a nya berapa

[tex]\displaystyle ^a\log{81}=\frac{4}{3} \\ ^a\log{3^4}=\frac{4}{3} \\ 4 ^a\log{3}=\frac{4}{3} \\ ^a\log{3}=\frac{1}{3} \\ \frac{1}{^3\log{a}}=\frac{1}{3} \\ ^3\log{a}=3 \\ a=3^3=27[/tex]