\documentclass[12pt]{article}
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\begin{document}
\begin{equation*}
  |\Delta|<\Big|\frac{1+PC}{C}\Big|
  \qquad\text{or}\qquad
  |\delta|=\Big| \frac{\Delta}{P} \Big| < \frac{1}{|T|}.
\end{equation*}
\end{document}