Решить неравенство 1-3x<0<br>
1 - 3x < 0 => -3x < -1 => -x < <img src="https://tex.z-dn.net/?f=+%5Cfrac%7B1%7D%7B3%7D+" id="TexFormula1" title=" \frac{1}{3} " alt=" \frac{1}{3} " align="absmiddle" class="latex-formula"> => x >