\[Дано:\ \ a > 8\ \ и\ \ b > 2.\]
\[3a + b > 26 \Longrightarrow верно.\ \]
\[a > 8\ \ \ \ | \cdot 3\]
\[+ \left| \begin{matrix} 3a > 24 \\ b > 2 \\ \end{matrix} \right.\ \]
\[\text{\ \ \ \ }\overline{3a + b > 26}\]