I am a mathematician and so I suppose I do have a 'maths brain' but I find numerical puzzles unappealing.
This one is about assigning values to variables so the obvious thing to do is design a spreadsheet to calculate the values of the expressions. That in itself is an incredibly tedious exercise and I will need to check and recheck to ensure I have not made any slips.
Then it seems to be a matter of looking at magnitudes.
The only way I can see into the puzzle is 29. Then there seems nowhere obvious to go. I may well sit this one out and let those who can code have a good time.