Question about Casio FX991ES Scientific Calculator

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Solve 20*d=1mod 48

Pls solve

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There is no solution in the integers. 20*d is an even number for all d, and no even number mod another even number is odd.

Posted on May 08, 2013

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15 + 49 = 24 thats wrong pls check


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27+48=42

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