Решите неравенство:(1/3)^{1-3x} <1/81

Question

Решите неравенство:(1/3)^{1-3x} <1/81<hr>

Answer 1

4\\\\3x<-3\\\\x<-1\\\\x\in (-\infty,-1)" alt="(\frac{1}{3})^{1-3x}<\frac{1}{81}\\\\(\frac{1}{3})^{1-3x}<(\frac{1}{3})^4\\\\1-3x>4\\\\3x<-3\\\\x<-1\\\\x\in (-\infty,-1)" align="absmiddle" class="latex-formula">