Question

solutia naturala a inecuatiei 2x +1mai mic decat 3

Answer 1

$2x + 1 < 3$

$2x < 3 - 1$

$2x < 2 \: | \div 2$

$x < 1$

$x \: \in \: ( - \infty ,1)$

$x \: \in \: \mathbb{N} = > x = 0$