penyelesaian pertidaksamaan

[tex] \frac{1}{2} x - \frac{2}{5} x < - 4 + \frac{1}{5} \\ \frac{5}{10} x- \frac{4}{10} x < - \frac{20}{5} + \frac{1}{5} [/tex]
[tex] \frac{1}{10} x < - \frac{19}{5} \\ x < - \frac{19}{5} \times 10 \\ x < - 38[/tex]