Question

Determinati numerele naturale n astfel incat: 2n-1/3n+2

Answer 1

2n-1/3n+2 £N
2n-1|3n+3/*2=>2n-1|6n+4
2n-1|2n-2/*3=>2n-1|6n-3
=>2n-1|7/+1
2n|8/÷2
n|4
n={1,2,4}