Resposta :
[tex]x+3<5\ \therefore\ x+3-3<5-3\ \therefore\ \boxed{x<2}[/tex]
[tex]\boxed{\mathbb{S}=\left\{x\in\mathbb{N}\ |\ x<2\right\}}[/tex]
[tex]x+3<5\ \therefore\ x+3-3<5-3\ \therefore\ \boxed{x<2}[/tex]
[tex]\boxed{\mathbb{S}=\left\{x\in\mathbb{N}\ |\ x<2\right\}}[/tex]