[tex]\qquad\qquad \textit{columns}\\ b=\begin{bmatrix} 6&-5&16\\ 3&22&\boxed{24}\\ 7&22&14 \end{bmatrix} \begin{array}{llll} r\\o\\w\\s \end{array}\qquad \impliedby \qquad \begin{array}{llll} b23\\ \textit{matrix "b"}\\ \textit{row 2}\\ \textit{column 3} \end{array}[/tex]
