Point Image Reflection Two Lines (Jee Mains)

3D Line Equations and Skew

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Point Image Reflection Two Lines

If the image of the point P(a, 2, a) in the line $\frac{x}{2} = \frac{{y + a}}{1} = \frac{z}{1}$ is Q and the of image of Q in the line $\frac{{x - 2b}}{2} = \frac{{y - a}}{1} = \frac{{z + 2b}}{{ - 5}}$ is P, then a + b is equal to………..

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