Question

Salut!M-ajutati,va rog?
Aflati elementele multimii A={ x∈ℕ, 15/2x-1 ∈ ℕ}

Answer 1

2x-1=1
x=1
2x-1=3
x=2
2x-1=5
x=3
2x-1=15
x=8
x={1.2.3.8}