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Question-The-congruence-equation-5a-3-x-3a-4-19-is-given-Find-the-sum-of-digits-of-the-smallest-three-digit-natural-number-a-su




Question Number 201897 by mnjuly1970 last updated on 15/Dec/23
       Question:  The congruence         equation   ′′    ( 5a +3 )x  ≡^(3a + 4)  19   ′′  is given.         Find the sum of digits of           the smallest  three −digit natural number  ” a ”          such that the assumed equation has            no  solution  in   ”   Z  ”.
$$ \\ $$$$\:\:\:\:\:\mathrm{Q}{uestion}:\:\:{The}\:{congruence} \\ $$$$\:\:\:\:\:\:\:{equation}\:\:\:''\:\:\:\:\left(\:\mathrm{5}{a}\:+\mathrm{3}\:\right){x}\:\:\overset{\mathrm{3}{a}\:+\:\mathrm{4}} {\equiv}\:\mathrm{19}\:\:\:''\:\:{is}\:{given}. \\ $$$$\:\:\:\:\:\:\:{Find}\:{the}\:{sum}\:{of}\:{digits}\:{of}\:\: \\ $$$$\:\:\:\:\:\:\:{the}\:{smallest}\:\:{three}\:−{digit}\:{natural}\:{number}\:\:''\:{a}\:''\: \\ $$$$\:\:\:\:\:\:\:{such}\:{that}\:{the}\:{assumed}\:{equation}\:{has}\: \\ $$$$\:\:\:\:\:\:\:\:\:{no}\:\:{solution}\:\:{in}\:\:\:''\:\:\:\mathbb{Z}\:\:''. \\ $$$$ \\ $$

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