By what rule/property 2^(-1) mod 11 = 6?

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vision-bk2016-02-23 14:00:29

Algebra

vision-bk, 2016-02-23 14:00:29

I'm sorry, perhaps for a very stupid question, but algebra at the university was taught poorly and extremely superficially.
I would like a detailed explanation of the algorithm of how this is calculated.
And just like that, I wonder why 6 ^ (-1) mod 11 = 2

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Andrew, 2016-02-23
@vision-bk

I recommend links in this thread: www.cyberforum.ru/algebra/thread966752.html
or for example here: planetcalc.ru/3311

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Sergey Gladkovskiy, 2014-11-16
@SMGladkovskiy

In your controller, you mean passing the user id from the form to the URL to search for the corresponding user in the database in the corresponding method (postActiv ($ userId)). At the same time, in the form you do not include this identifier in the form URL.
Well, actually, did you try to debug the input in the method? Are you getting all the data for each line of code, or are you missing something somewhere? What errors does the system give?