Scalar multiplication: Find the value of the matrix — task. Mathematics State Board, Class 10.

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Determine \(3A - 5B\), if \(A =\begin{bmatrix}
2 & 4 & 6\\
7 & 5 & -4\\
-2 & 1 & 7
\end{bmatrix}, B = \begin{bmatrix}
2 & 4 & 6\\
7 & 5 & 3\\
7 & 1 & 7
\end{bmatrix}\)

\(\begin{bmatrix}
-4 & -8 & -12\\
-14 & 40 & 3\\
29& 8 & 56
\end{bmatrix}\)
\(\begin{bmatrix}
3 & -8 & 8\\
-10 & 40 & -4\\
29 & -12 & 21
\end{bmatrix}\)
\(\begin{bmatrix}
8 & 29 & -12\\
3 & 40 & -14\\
-8 & -4 & 56
\end{bmatrix}\)

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7. Scalar multiplication: Find the value of the matrix

Exercise condition: