Find the shortest distance between given lines. `(x-1)/1=(y-2)/-1=(z-1)/1` and `(x-2)/2=(y+1)/1=(z+1)/2` .

Find the shortest distance between the lines ((x+1)/4=(y-3)/-6=(z+1)/1 and (x+3)/3=(y-5)/2=(z-7)/6

Find the shortest distance between the lines ((x+1)/7=(y+1)/-6=(z+1)/1 and (x-3)/1=(y-5)/-2=(z-7)/1)

Find the shortest distance between the lines : (x+1)/4=(y-3)/-6=(z+1)/1 and (x+3)/3=(y-5)/2=(z-7)/6 .

Find the shortest distance between the lines : (x+1)/5=(y+1)/-6=(z+1)/2 and (x-3)/4=(y-5)/-2=(z-7)/1 .

Find shortest distance between lines (x-1)/2=(y-2)/3=(z-3)/4 and (x-2)/3=(y-4)/4=(z-5)/5

Find the shortest distance between the lines (x+1)/7 = (y+1)/-6 = (z+1)/1 and (x-3)/1 = (y-5)/-2 = (z-7)/1

Find the magnitude of the shortest distance between the lines (x)/(2)=(y)/(-3)=(z)/(1) and (x-2)/(3)=(y-1)/(-5)=(z+2)/(2) .

Find the shortest distance between the lines (x+1/5=y+1/-6=z+1/2 and x-3/4=y-5/-2=z-7/1