Why do not you examine the messages above? There are two different formulas: one for duplication and another for addition.
To be honest your messages are very hard to read. It could be more helpful for you if you can ask the specific question you do not understand or have issues with.
SORRY! My English is bad and I'm not good at math or programming.
Duplicate point I already understood
That will be my last question.
What did I do wrong?
Point addition:(2G+1G =3G)
Why was my result not: 112711660439710606056748659173929673102114977341539408544630613555209775888121?
Order: 115792089237316195423570985008687907852837564279074904382605163141518161494337
Modulo: 115792089237316195423570985008687907853269984665640564039457584007908834671663
Private key: 0000000000000000000000000000000000000000000000000000000000000003
Point addition:(2G+1G =3G)
Compressed public key;
In decimal;
Equation:
c = (qy – py) / (qx – px)
rx = c^2 – px – qx
px = 89565891926547004231252920425935692360644145829622209833684329913297188986597
py = 12158399299693830322967808612713398636155367887041628176798871954788371653930
qx = 55066263022277343669578718895168534326250603453777594175500187360389116729240
qy = 32670510020758816978083085130507043184471273380659243275938904335757337482424
c = 32670510020758816978083085130507043184471273380659243275938904335757337482424-
12158399299693830322967808612713398636155367887041628176798871954788371653930=
20512110721064986655115276517793644548315905493617615099140032380968965828494
c = 55066263022277343669578718895168534326250603453777594175500187360389116729240-
89565891926547004231252920425935692360644145829622209833684329913297188986597=
81292460333046534861896783477920749818876442289795948381273441455000762414306
c = 20512110721064986655115276517793644548315905493617615099140032380968965828494/
81292460333046534861896783477920749818876442289795948381273441455000762414306=
23578750110654438173404407907450265080473019639451825850605815020978465167024
c = 23578750110654438173404407907450265080473019639451825850605815020978465167024
rx = 23578750110654438173404407907450265080473019639451825850605815020978465167024^2 -
89565891926547004231252920425935692360644145829622209833684329913297188986597-
55066263022277343669578718895168534326250603453777594175500187360389116729240
rx = 25759636913902563110438328477658084082469757293658084474899962813078412260632-
34499628904269660561674201530767158034393542375844615658184142552908072257357
rx = 107052097246949097972335111955578833901346199583454032856173404268079174674938
Correct resultt:112711660439710606056748659173929673102114977341539408544630613555209775888121