[" Equation of "X" -axis is "],[bigcirc(x)/(1)=(y)/(1)=(z)/(1)],[" O "(x)/(0)=(y)/(1)=(z)/(1)],[" O "(x)/(0)=(y)/(0)=(z)/(1)]

Find the equation of the line intersecting the lines (x-a)/(1)=(y)/(1)=(z-a)/(1) and (x+a)/(1)=(y)/(1)=(z+a)/(2) and parallel to the line (x-a)/(2)=(y-a)/(1)=(z-2a)/(3)

Equation of the line of the shortest distance between the lines (x)/(1)=(y)/(-1)=(z)/(1) and (x-1)/(0)=(y+1)/(-2)=(z)/(1) is:

Given x+ (1)/(y)=1 and y + (1)/(z)=1 find (x+y+z) + ((1)/(x) + (1)/(y) + (1)/(z))= ?

Find the equations of the line intersecting the lines (x-a)/1=(y)/1=(z-a)/1 and (x-a)/2=y/1=(z+a)/2 and parallel to the line (x-a)/2=(y-a)/1=(z-2a)/2 .