\[\mathrm{\Delta}x = \left| 0,3 - \frac{1}{3} \right| = \left| \frac{3}{10} - \frac{1}{3} \right| =\]
\[= \left| \frac{9 - 10}{30} \right| = \left| - \frac{1}{30} \right| = \frac{1}{30} =\]
\[= 0,0(3)\]