How would you subtract the following in numerology? I am not asking this as a quiz or a mind buster but I really want to know how to do the math.
1-11=
2-11=
3-11=
4-11=
5-11=
6-11=
7-11=
8-11=
9-11=
10-11=
11-11=
12-11=
13-11=
14-11=
15-11=
etc...
Or is it like 9-11 = 9-2=7 i If so, what would 1-11=

I don't believe there is standard math in Numerology
Yes, they seam to add digits together regularly, but mostly when the co-incidence of adding them this way suits them

Assuming that is true then I would assume this applies

I will assume you are correct and I that is his I would do the math but was uncertain so decided to put up a post and ask I appreciate you chimeing in to answer. What concerns me about the answer is I do not think there are negative digits in numerology but then again I'm not sure. Hmmm

After exploring the numerology wikipedia page, I realize there was a better way to perform the number reduction that you asked about on an earlier thread.
=IFERROR((1/MOD(A2,9))^-1,9)
Apologies for the slight detour...