Monday, 28 March 2016

number theory - Simplifying Linear Congruences

I want to solve the given linear congruence



5x+1\equiv 2 \mod 6




My Approach:



\begin{align}&\Rightarrow& 5x -1&\equiv 0\mod 6 \\ &\Rightarrow& 6x -x-1&\equiv 0\mod6 \tag{ as $6\equiv 0\mod6$}\\ &\Rightarrow& 0 -x-1&\equiv 0\mod6 \\ &\Rightarrow& x&\equiv -1\mod 6 \end{align}




Am I correct till now ?? If I am correct, how to proceed further?

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