Step-by-step explanation:
[tex]1 \frac{3}{5} - \frac{3}{4} x = - 3 \frac{2}{5} [/tex]
[tex] \frac{8}{5} - \frac{3}{4} x = - \frac{17}{5} [/tex]
[tex] \frac{8}{5} + \frac{17}{5} = \frac{3}{4} x[/tex]
[tex] \frac{25}{5} = \frac{3}{4} x[/tex]
[tex] \frac{3}{4} x = 5[/tex]
[tex]x = \frac{20}{3} = 6 \frac{2}{3} [/tex]