TeX source:

\begin{aligned} &\begin{array}{c|cccccc} x & 2 & 3 & 4 & 5 & 6 & 7 \\ \hline P(x) & \frac{1}{144} & \frac{4}{144} & \frac{8}{144} & \frac{12}{144} & \frac{16}{144} & \frac{22}{144} \end{array}\\ &\begin{array}{c|ccccc} x & 8 & 9 & 10 & 11 & 12 \\ \hline P(x) & \frac{24}{144} & \frac{20}{144} & \frac{16}{144} & \frac{12}{144} & \frac{9}{144} \end{array} \end{aligned}