After realising how bloomin' simple yesterday's version of Solve A,B,C was, I spent an hour or so trying to find the most convoluted of puzzles.
I think the maths should be fairly complex, now, but am more convinced than ever, that figuring out the solution isn't as mathematically simple as it should be.

Added Move One Digit, which needed a brief explanation.
Currently considering adding a similarly short description to each of the panels.