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Evaluate the expression \(\displaystyle 7 A - 3 B - 4 C\)
\begin{equation*} A = \left[\begin{matrix}-9 & -6 & 7 & 1\\-3 & 8 & -9 & -8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-9 & 9 & -9 & 0\\-6 & -5 & -6 & 6\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}0 & 4 & 5 & -4\\-1 & 3 & -1 & 3\end{matrix}\right]. \end{equation*}

The sum is \(\displaystyle \left[\begin{matrix}-36 & -85 & 56 & 23\\1 & 59 & -41 & -86\end{matrix}\right]\).

Download \(\LaTeX\) 

\begin{question}Evaluate the expression $7 A - 3 B - 4 C$\newline\begin{equation*} A = \left[\begin{matrix}-9 & -6 & 7 & 1\\-3 & 8 & -9 & -8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-9 & 9 & -9 & 0\\-6 & -5 & -6 & 6\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}0 & 4 & 5 & -4\\-1 & 3 & -1 & 3\end{matrix}\right]. \end{equation*}
    \soln{9cm}{The sum is $\left[\begin{matrix}-36 & -85 & 56 & 23\\1 & 59 & -41 & -86\end{matrix}\right]$. }

\end{question}

Download Question and Solution Environment\(\LaTeX\)
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\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 7 A - 3 B - 4 C " src="/equation_images/%20%5Cdisplaystyle%207%20A%20-%203%20B%20-%204%20C%20" alt="LaTeX:  \displaystyle 7 A - 3 B - 4 C " data-equation-content=" \displaystyle 7 A - 3 B - 4 C " /> <br> <img class="equation_image" title="  A = \left[\begin{matrix}-9 & -6 & 7 & 1\\-3 & 8 & -9 & -8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-9 & 9 & -9 & 0\\-6 & -5 & -6 & 6\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}0 & 4 & 5 & -4\\-1 & 3 & -1 & 3\end{matrix}\right].  " src="/equation_images/%20%20A%20%3D%20%5Cleft%5B%5Cbegin%7Bmatrix%7D-9%20%26%20-6%20%26%207%20%26%201%5C%5C-3%20%26%208%20%26%20-9%20%26%20-8%5Cend%7Bmatrix%7D%5Cright%5D%2C%5Cquad%5Cquad%20B%20%3D%20%5Cleft%5B%5Cbegin%7Bmatrix%7D-9%20%26%209%20%26%20-9%20%26%200%5C%5C-6%20%26%20-5%20%26%20-6%20%26%206%5Cend%7Bmatrix%7D%5Cright%5D%2C%20%5Ctext%7B%20and%20%7D%20%5Cquad%20C%20%3D%20%5Cleft%5B%5Cbegin%7Bmatrix%7D0%20%26%204%20%26%205%20%26%20-4%5C%5C-1%20%26%203%20%26%20-1%20%26%203%5Cend%7Bmatrix%7D%5Cright%5D.%20%20" alt="LaTeX:   A = \left[\begin{matrix}-9 & -6 & 7 & 1\\-3 & 8 & -9 & -8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-9 & 9 & -9 & 0\\-6 & -5 & -6 & 6\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}0 & 4 & 5 & -4\\-1 & 3 & -1 & 3\end{matrix}\right].  " data-equation-content="  A = \left[\begin{matrix}-9 & -6 & 7 & 1\\-3 & 8 & -9 & -8\end{matrix}\right],\quad\quad B = \left[\begin{matrix}-9 & 9 & -9 & 0\\-6 & -5 & -6 & 6\end{matrix}\right], \text{ and } \quad C = \left[\begin{matrix}0 & 4 & 5 & -4\\-1 & 3 & -1 & 3\end{matrix}\right].  " /> </p> </p>
HTML for Canvas
<p> <p>The sum is  <img class="equation_image" title=" \displaystyle \left[\begin{matrix}-36 & -85 & 56 & 23\\1 & 59 & -41 & -86\end{matrix}\right] " src="/equation_images/%20%5Cdisplaystyle%20%5Cleft%5B%5Cbegin%7Bmatrix%7D-36%20%26%20-85%20%26%2056%20%26%2023%5C%5C1%20%26%2059%20%26%20-41%20%26%20-86%5Cend%7Bmatrix%7D%5Cright%5D%20" alt="LaTeX:  \displaystyle \left[\begin{matrix}-36 & -85 & 56 & 23\\1 & 59 & -41 & -86\end{matrix}\right] " data-equation-content=" \displaystyle \left[\begin{matrix}-36 & -85 & 56 & 23\\1 & 59 & -41 & -86\end{matrix}\right] " /> . </p> </p>