How do I find the shortest distance between the two lines

(x, y, z) = (-2, -1, - 4) + t(1, 1, -1)

and

(x,yhttp://webwork.ucalgary.ca/webwork2_...144/char3B.pngz)=(−1http://webwork.ucalgary.ca/webwork2_...144/char3B.png−1http://webwork.ucalgary.ca/webwork2_...144/char3B.png1)+t(3http://webwork.ucalgary.ca/webwork2_...144/char3B.png1http://webwork.ucalgary.ca/webwork2_...144/char3B.png−2)