Solve For $X$ In the Equation Given A) $\left[ \begin{array} { c c c } 72 & - 15 & 21 \\ 78 & - 39 & - 33 \end{array} \right]$

Solve for $X$ in the equation given.
$$9 A + 6 B = 3 X , A = \left[ \begin{array} { c c c } 6 & - 5 & 3 \\8 & - 3 & - 7\end{array} \right] \text { and } B = \left[ \begin{array} { c c c } 3 & 5 & - 1 \\1 & - 2 & 5\end{array} \right]$$

A) $\left[ \begin{array} { c c c } 72 & - 15 & 21 \\ 78 & - 39 & - 33 \end{array} \right]$
B) $\left[ \begin{array} { c c c } 9 & 0 & 2 \\ 9 & - 5 & - 2 \end{array} \right]$
C) $\left[ \begin{array} { c c c } 24 & - 5 & 7 \\ 26 & - 13 & - 11 \end{array} \right]$
D) $\left[ \begin{array} { c c c } 12 & - 25 & 11 \\ 22 & - 5 & - 31 \end{array} \right]$
E) not possible

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