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If matrix A=[[1,2,3], [4,1,2], [1,-1,2]]...

If matrix `A=[[1,2,3], [4,1,2], [1,-1,2]]` `B= [[2,1,3], [4,1,-1], [2,2,3]]` `C= [[14], [12], [2]]` `D= [[13], [11], [14]]`. When `X= [[x], [y],[z]]` is such that solutions of equations `AX=C` and `BX=D` represents two points L and M in three dimensional space. If l' and M' are the reflection of points L and M in the plane `x+y+z=9` then find values of L,M,L' and M'

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