I don’t understand how number people can’t explain the function that proves their theory. If I am determining direct variation, to find the constant you would use y/x =k and if direct variation is present, k will be same for all points on the graph. It will work out every time.
If I use the function 2x+1=y the same line will be produced every time. That is how math works. There are boundaries that everyone who comes with these math comparisons can never define. There is no reason to use the definition of hex and associate this with the letter ayn in the Arabic language that can be used twice. It is like saying sometimes you need to borrow when subtracting a lower number from a larger one and sometimes you don’t. Whatever you feel like doing.
Also 18 should equal nine. It should be six sides and the number nine. You only get six, six if you add 18 and 6 which equals 24 and then add 2 and four together which equals six. This leaves you with one six. You have no reason to retain the six from hex that is consistent and can be used twice. The six in hex has been absorbed so you either get the single number 6 or the numbers 6 and 9 because math has boundaries.