another little bit of help and this is NOT a homework assignment this is for an exam i need to understand it(adsbygoogle = window.adsbygoogle || []).push({});

the qustion is find the decryption function for C = (7M + 9 ) mod 26

how do i fin the decryption function using the inverse?

that is 15 in this case

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# Solving linear congruences

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