Hukum Boyle-Gay Lussac

\begin{equation*}
\begin{split}
\frac {P_1 \:.\: V_1}{T_1} & = \frac {P_2 \:.\: V_2}{T_2} \\\\
\frac {2 \:.\: 1}{27 + 273} & = \frac {P_2 \:.\: 2}{227 + 273} \\\\
\frac {\cancel{2} \:.\: 1}{300} & = \frac {P_2 \:.\: \cancel{2}}{500} \\\\
\frac {1}{300} & = \frac {P_2}{500} \\\\
P_2 \:.\: 300 & = 500 \\\\
P_2 & = \frac 53 \text{ atm}
\end{split}
\end{equation*}