Given A= pmatrix 12 & -3 & 5 4 & - 23 & 0 7 & 1 & -1 pmatrix , B= pmatrix - 12 & 4 &…

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Problem

Given A=(12−354−23071−1),B=(−124−23536−724),A=\begin{pmatrix}\dfrac12 & -3 & 5\\ 4 & -\dfrac23 & 0\\ 7 & 1 & -1\end{pmatrix},\qquad B=\begin{pmatrix}-\dfrac12 & 4 & -2\\ 3 & \dfrac53 & 6\\ -7 & 2 & 4\end{pmatrix}, find A−BA-B. (a) (−1−771−73−614−1−5)\begin{pmatrix}-1 & -7 & 7\\ 1 & -\dfrac73 & -6\\ 14 & -1 & -5\end{pmatrix} (b) (1−771−73−614−1−5)\begin{pmatrix}1 & -7 & 7\\ 1 & -\dfrac73 & -6\\ 14 & -1 & -5\end{pmatrix} (c) (1−771−13−614−1−5)\begin{pmatrix}1 & -7 & 7\\ 1 & -\dfrac13 & -6\\ 14 & -1 & -5\end{pmatrix} (d) (−17−7−1736−1415)\begin{pmatrix}-1 & 7 & -7\\ -1 & \dfrac73 & 6\\ -14 & 1 & 5\end{pmatrix}

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