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Evaluate the expression \(\displaystyle 5 A - B - 5 C\)
\begin{equation*} A = \left[\begin{matrix}-5 & 6 & -3\\1 & 8 & 8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-3 & -2 & 4\\-9 & 8 & 5\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}9 & -3 & -3\\-4 & 7 & 5\end{matrix}\right]. \end{equation*}

The sum is \(\displaystyle \left[\begin{matrix}-67 & 47 & -4\\34 & -3 & 10\end{matrix}\right]\).

Download \(\LaTeX\) 

\begin{question}Evaluate the expression $5 A - B - 5 C$\newline\begin{equation*} A = \left[\begin{matrix}-5 & 6 & -3\\1 & 8 & 8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-3 & -2 & 4\\-9 & 8 & 5\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}9 & -3 & -3\\-4 & 7 & 5\end{matrix}\right]. \end{equation*}
    \soln{9cm}{The sum is $\left[\begin{matrix}-67 & 47 & -4\\34 & -3 & 10\end{matrix}\right]$. }

\end{question}

Download Question and Solution Environment\(\LaTeX\)
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\usepackage[margin=2cm]{geometry}
\usepackage{tcolorbox}

\newcounter{ExamNumber}
\newcounter{questioncount}
\stepcounter{questioncount}

\newenvironment{question}{{\noindent\bfseries Question \arabic{questioncount}.}}{\stepcounter{questioncount}}
\renewcommand{\labelenumi}{{\bfseries (\alph{enumi})}}

\newif\ifShowSolution
\newcommand{\soln}[2]{%
\ifShowSolution%
\noindent\begin{tcolorbox}[colframe=blue,title=Solution]#2\end{tcolorbox}\else%
\vspace{#1}%
\fi%
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\newcommand{\hideifShowSolution}[1]{%
\ifShowSolution%
%
\else%
#1%
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}%
\everymath{\displaystyle}
\ShowSolutiontrue

\begin{document}\begin{question}(10pts) The question goes here!
    \soln{9cm}{The solution goes here.}

\end{question}\end{document}
HTML for Canvas 
<p> <p>Evaluate the expression  <img class="equation_image" title=" \displaystyle 5 A - B - 5 C " src="/equation_images/%20%5Cdisplaystyle%205%20A%20-%20B%20-%205%20C%20" alt="LaTeX:  \displaystyle 5 A - B - 5 C " data-equation-content=" \displaystyle 5 A - B - 5 C " /> <br> <img class="equation_image" title="  A = \left[\begin{matrix}-5 & 6 & -3\\1 & 8 & 8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-3 & -2 & 4\\-9 & 8 & 5\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}9 & -3 & -3\\-4 & 7 & 5\end{matrix}\right].  " src="/equation_images/%20%20A%20%3D%20%5Cleft%5B%5Cbegin%7Bmatrix%7D-5%20%26%206%20%26%20-3%5C%5C1%20%26%208%20%26%208%5Cend%7Bmatrix%7D%5Cright%5D%2C%5Cquad%5Cquad%20B%20%3D%20%5Cleft%5B%5Cbegin%7Bmatrix%7D-3%20%26%20-2%20%26%204%5C%5C-9%20%26%208%20%26%205%5Cend%7Bmatrix%7D%5Cright%5D%2C%20%5Ctext%7B%20and%20%7D%20%5Cquad%20C%20%3D%20%5Cleft%5B%5Cbegin%7Bmatrix%7D9%20%26%20-3%20%26%20-3%5C%5C-4%20%26%207%20%26%205%5Cend%7Bmatrix%7D%5Cright%5D.%20%20" alt="LaTeX:   A = \left[\begin{matrix}-5 & 6 & -3\\1 & 8 & 8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-3 & -2 & 4\\-9 & 8 & 5\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}9 & -3 & -3\\-4 & 7 & 5\end{matrix}\right].  " data-equation-content="  A = \left[\begin{matrix}-5 & 6 & -3\\1 & 8 & 8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-3 & -2 & 4\\-9 & 8 & 5\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}9 & -3 & -3\\-4 & 7 & 5\end{matrix}\right].  " /> </p> </p>
HTML for Canvas
<p> <p>The sum is  <img class="equation_image" title=" \displaystyle \left[\begin{matrix}-67 & 47 & -4\\34 & -3 & 10\end{matrix}\right] " src="/equation_images/%20%5Cdisplaystyle%20%5Cleft%5B%5Cbegin%7Bmatrix%7D-67%20%26%2047%20%26%20-4%5C%5C34%20%26%20-3%20%26%2010%5Cend%7Bmatrix%7D%5Cright%5D%20" alt="LaTeX:  \displaystyle \left[\begin{matrix}-67 & 47 & -4\\34 & -3 & 10\end{matrix}\right] " data-equation-content=" \displaystyle \left[\begin{matrix}-67 & 47 & -4\\34 & -3 & 10\end{matrix}\right] " /> . </p> </p>