Explicație pas cu pas:
[tex] \large \bf - 7 \in \mathbb{N}\implies fals[/tex]
[tex]\large \bf - 7 \in \mathbb{Z} \implies adevarat[/tex]
[tex]\large \bf - 7 \in \mathbb{Q}\implies adevarat[/tex]
[tex]\large \bf - 7 \in \mathbb{Q} - \mathbb{Z}\implies fals[/tex]
#copaceibrainly
