Online Course Discussion Forum
MC II-A Number Theory 5.19
For this question, I understand how to get the modular multiplicative inverse of gcd (5,12)=1, which is 5, but I don't quite fathom how it is useful for obtaining the answer to the variable m in 14≡2 (mod m), which is clearly 12. Thanks!
Just another quick note: For 5.20, I believe that the answer explanation should began with gcd (2, 12)=2 instead of gcd (5,12)=2, which is from the previous question 5.19. I think it's just some typo stuff that isn't a big deal.