Question

Numerele naturale care sunt soluţii ale inecuaţiei 2x+3<_7

Answer 1

2x+3≤7
2x≤7-3
2x≤4 |:2
x≤2
S={0,1,2}

Answer 2

$2x + 3 \leqslant 7$

$2x \leqslant 7 - 3$

$2x \leqslant 4 \: | \div 2$

$x \leqslant 2$

$x \: \in \: \mathbb{N} = > x \: \in \: \left \{ 0,1,2 \right \}$