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Determinati elementele multimii D={X apartine lui Z | 14 supra X+5 apartine lui Z}

Răspuns :

Kawaiimathask

14/(x+5) € Z => (x+5)|14 => x+5€D14

=> x+5€{-14,-7,-2,-1,1,2,7,14} /-5

x€{-19,-12,-7,-6,-4,-3,2,9}

=> D={-19,-12,-7,-6,-4,-3,2,9}

Kawaiimath

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