Respuesta

B

Resolvamos la ecuación:

$\displaystyle1-\displaystyle\frac{2-\displaystyle\frac{1}{3}}{{x}} =6\Longrightarrow 1-6=\displaystyle\frac{2-\displaystyle\frac{1}{3}}{{x}}$

$-5 \cdot x = \dfrac{6 - 1}{3} = \dfrac{5}{3}$

Luego:

$x=-\displaystyle\frac{\displaystyle\frac{5}{3}}{5}=-\displaystyle\frac{1}{3}$