Question

Determinati multimea:
B={x apartine Z/x+1:x-1 apartin Z}

Answer 1

x+1:x-1 apartine Z daca x-1 divide pe x+1 => x+1| -2 => x+1 apartine {-2, -1, 1, 2} => x apartine {-3, -2, 0, 1} => B={-3, -2, 0, 1}
Sper ca te-a ajutat:)