помогите решить задания по матрице. МОЙ ВАРИАНТ 23

Решите задачу:

$A= \left[\begin{array}{ccc}1&3\\0&2\\\end{array}\right]$
$B= \left[\begin{array}{ccc}2&1\\-3&0\\\end{array}\right]$
$C= \left[\begin{array}{ccc}2&5\\1&1\\\end{array}\right]$
$A^T= \left[\begin{array}{ccc}1&0\\3&2\\\end{array}\right]$
$C^T= \left[\begin{array}{ccc}2&1\\5&1\\\end{array}\right]$
$D=( \frac{1}{3}* \left[\begin{array}{ccc}1&0\\3&2\\\end{array}\right]+ \frac{1}{9}* \left[\begin{array}{ccc}2&1\\-3&0\\\end{array}\right])* \left[\begin{array}{ccc}2&1\\5&1\\\end{array}\right]=( \left[\begin{array}{ccc}0.33&0\\1&0.66\\\end{array}\right]+ \left[\begin{array}{ccc}0.22&0.11\\-0.3&0\\\end{array}\right] )* \left[\begin{array}{ccc}2&1\\5&1\\\end{array}\right]= \left[\begin{array}{ccc}0.55&0.11\\0.7&0.66\\\end{array}\right]* \left[\begin{array}{ccc}2&1\\5&1\\\end{array}\right]= [tex] \left[\begin{array}{ccc}1.65&0.66\\4.7&1.36\\\end{array}\right]$