Shortest distance between two lines

The cartesian equations of two lines are

${\displaystyle \frac{x-6}{7}}={\displaystyle \frac{y+2}{1}}={\displaystyle \frac{z-14}{-5}}$‍ and

${\displaystyle \frac{x-8}{2}}={\displaystyle \frac{y+1}{1}}={\displaystyle \frac{z-12}{-3}}$‍.

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