mannequin symmetry

(mannequin+boiler+water pipes) = x -> x*2 -> 2x=y -> y?

2x = y I -x
x = y -x I -y
x-y = -x I +y
x = -x+y I-x
L = -2x+y I +2x
2x = y I ???

...whatever, I'm a photographer and not a mathematician.

-> y=mannequin symmetry

motion in motion