Question

Determine a matriz X tal que:

Answer 1

$2. \left[\begin{array}{ccc}4&1&3\\6&2&-1\end{array}\right] +X=3 \left[\begin{array}{ccc}1&2&-1\\0&2&1\end{array}\right] \rightarrow \\ \\ \\ \left[\begin{array}{ccc}8&2&6\\12&4&-2\end{array}\right] +X= \left[\begin{array}{ccc}3&6&-3\\0&6&3\end{array}\right] \rightarrow\\ \\ \\ X=\left[\begin{array}{ccc}3&6&-3\\0&6&3\end{array}\right] - \left[\begin{array}{ccc}8&2&6\\12&4&-2\end{array}\right] = \left[\begin{array}{ccc}-5&4&-9\\-12&2&5\end{array}\right]$