-2\\\\3x< 9\\\\x<3\\\\x\in (-\infty ;\; 3)" alt=" (\frac{1}{5} )^{3x-7}\ \textgreater \ 0,04\\\\(5^{-1})^{3x-7}\ \textgreater \ 5^{-2}\; \; \; (0,04=\frac{4}{100}=\frac{1}{25}=\frac{1}{5^2}=5^{-2})\\\\-3x+7>-2\\\\3x< 9\\\\x<3\\\\x\in (-\infty ;\; 3)" align="absmiddle" class="latex-formula">