\[1\frac{3}{4}x < - 2\frac{1}{3}\ \]
\[\ \frac{7}{4}x < - \frac{7}{3}\text{\ \ }\]
\[x < - \frac{4}{3}\]
\[Ответ:\left( - \infty;\ - 1\frac{1}{3} \right).\]