如何用模求解方程? [英] How to solve equation with modulo?

问题描述

如何在此等式中找到x:

(x + 35)％26 = 21

％是模数.

答案是x =90.

请指教，因为我的数学能力不足以解决此问题.
我知道有一些一致性计算，但是不知道如何在c#中实现.

How to find x in this equation:

(x + 35)%26 = 21

Where % is modulo.

The answer is x = 90.

Please advise, because my math skills are not enough to solve this problem.
I know that there are some congruence computation, but don''t know how to implement it in c#.

推荐答案

(x+35)%26 = x%26 + 35%26 = x%26 + 9

x%26 + 9 = 21  =>   x%26 = 12   =>   x = { 0+12, 1*26+12, 2*26+12,...} 

下次自己做作业.

Do your own homework next time.

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