Question

URGENTE!!!!
pra hoje, por favor, quem souber dá aquela moral
quem responder só pelos pontos vai ser denunciado

Answer 1

$X-\left[\begin{array}{ccc}6&-7\\8&-5\\2&10\end{array}\right]=\left[\begin{array}{ccc}7&-22\\3&16\\12&9\end{array}\right] \\\\\\ X=\left[\begin{array}{ccc}7&-22\\3&16\\12&9\end{array}\right]+\left[\begin{array}{ccc}6&-7\\8&-5\\2&10\end{array}\right] \\\\\\ X=\left[\begin{array}{ccc}13&-29\\11&11\\14&19\end{array}\right]$