Question

Determinati multimea
A=(x apartine N I 15/3*(x-4) apartine Z)

Answer 1

A={x apartine NI 15/3*(x-4)}
15/3*x-4  totul  il simplificam cu 3
5/x-4

x-4 apartine{1,-1,5,-5}
x {5,3,9,-1}

A={5,3,9,-1}