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Math Help - congruence modulo m

  1. #1
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    congruence modulo m

    Find x, if 1<x<84 such that x = 7 (mod 12).
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  2. #2
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    Quote Originally Posted by jenjen View Post
    Find x, if 1<x<84 such that x = 7 (mod 12).
    This is simple.

    Trivally,
    x = 7 (mod 12)
    Thus, 7 works.
    Now just keep adding 12.

    7,19,31,43,65,79
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