\large \Large \frac{3}{4}\large
\large \Large \frac{3}{4}\large \notin \mathbb{Z}
\large \Large \frac{3}{4}\large \in \mathbb{Z}
\large \Large \frac{5}{4}\large \notin \mathbb{Z}
\large \Large \frac{7}{2}\large \in \mathbb{Z}
