[tex]x - 2x + \frac{1}{3} = \frac{1}{2} [/tex]
[tex] x - 2x = \frac{1}{2} - \frac{1}{3} [/tex]
[tex] - x = \frac{3}{6} - \frac{2}{6} [/tex]
[tex] - x = \frac{1}{6} [/tex]
[tex]x = - \frac{1}{6} [/tex]
Pozdrowionka! ~Wika