Вычислите |-5/14|:|2 1/7|.

\[\left| - \frac{5}{14} \right|\ :\left| 2\frac{1}{7} \right| = \frac{5}{14}\ :\frac{15}{7} = \frac{5 \cdot 7}{14 \cdot 15} =\]

\[= \frac{1 \cdot 1}{2 \cdot 3} = \frac{1}{6}.\]