Anish R. answered 05/14/20
Computer Science and Engg. Senior at UM; C++, Python, ML, Math, ACT
This equation, as given, is unsolvable.
6n+12=6n+24; subtract 12 from both sides
6n=6n+12; divide both sides by 6
n=n+2; this is an incrementation, not a proper equation, and is not valid, as from here, it claims 0=2.
Therefore, this equation, as written, is invalid.