: To solve this, use the formula for the shortest distance between two lines, (d = \frac(\mathbfa_2 - \mathbfa_1) \cdot (\mathbfd_1 \times \mathbfd_2)), where (\mathbfa_1) and (\mathbfa_2) are points on each line, and (\mathbfd_1) and (\mathbfd_2) are the direction vectors of the lines.
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