Помогите решить 3 и 5 уравнения

[latex]3.\;5^{x-9}\ \textgreater \ 1\\5^{x-9}\ \textgreater \ 5^0\\x-9\ \textgreater \ 0\\x\ \textgreater \ 9\\\\5.\;5^x\ \textgreater \ \sqrt[3]{625}\\5^x\ \textgreater \ (625)^{\frac13}\\5^x\ \textgreater \ (5^4)^{\frac13}\\5^x\ \textgreater \ 5^{\frac43}\\x\ \textgreater \ \frac43\\x\ \textgreater \ 1\frac13[/latex]