Need help! I'm having some problem with understanding this equation! We have a similiar example in the book, but I dont really get what they mean.
So here is the question. Given 3u = 1 (mod 5), find u?
I mean, as far as I understand, 3 = 3 (mod 5), right? So how about "u"?
Could you help me with understanding this please? A general formula or way of solving might be useful, so I can apply it into other similiar equations as well as the harder ones.