Find the equation

We need to write this in vector form

Line I:

Equation of line passing through a (0, 0, 0) and b (1, 0, 2)

Line II:

Equation of line passing through a (1, 3, 0) and b (0, 3, 0)

Here

The shortest distance between two skew lines is

Putting these values in the expression,

d = 3 units