1 x 1 y 1 z 2 3 4 July 8, 2019 16 32 64 128 If lines x 1 2 y 1 3 z 1 4 and Two lines x 1 2 y 1 3 z 1 4 The lines x 1 2 y 1 3 z 1 4 1 x 2 y 4 0 1 y 1 z 1 0 2 x 3 x 14 X 1 2 y 1 3 z 1 4 và 2x y 5 5 Z-1 = z+1 1 y 2 3