[tex]\dfrac{5}{6}v \ \textless \ \dfrac{8}{5}\ \ \ |multiply\ both\ sides\ by\ \dfrac{6}{5}\\\\\dfrac{6}{5}\cdot\dfrac{5}{6}v \ \textless \ \dfrac{6}{5}\cdot\dfrac{8}{5}\\\\v \ \textless \ \dfrac{48}{25}\to v\in\left(-\infty;\ \dfrac{48}{25}\right)[/tex]
