Question

4 Rezolvati inecuatia 3x-1 < x+3 in multimea numerelo naturale

Answer 1

$3x - 1 < x + 3$
$3x-x < 3+1$
$2x < 4$
$x < 2$
$S = { 0,1 }$

Answer 2

3x-1<x+3 ⇒ 3x-x<3+1⇒ 2x<4 ⇒x<2⇒ x∈{0,1}