$\mathrm{A}=\left[\begin{array}{ccc}2 & -1 & 3 \\ 1 & 1 & 1 \\ 1 & -1 & 2\end{array}\right], \mathrm{B}=\left[\begin{array}{l}\mathrm{x} \\ \mathrm{y} \\ \mathrm{z}\end{array}\right], \mathrm{C}=\left[\begin{array}{l}2 \\ 5 \\ 4\end{array}\right]$

$2 \mathrm{x}-\mathrm{y}-\mathrm{z}=6, \mathrm{x}+3 \mathrm{y}+2 \mathrm{z}=1$ এবং $3 \mathrm{x}-\mathrm{y}-5 \mathrm{z}=1$.

$A=\left(\begin{array}{cc}1 & -1 \\ -2 & 3\end{array}\right), B=\left(\begin{array}{ll}1 & -1 \\ 3 & -2\end{array}\right)$

এবং x - y = 1 ও 2x - 3y = 2 একজোড়া সমীকরণ ।

$A=\left(\begin{array}{ll}1 & 2 \\ 3 & 4\end{array}\right)$ হলে $A^{-1}=$ কত?

$M=\left[\begin{array}{rrr}2 & 1 & 1 \\ -1 & 2 & 0 \\ 3 & 0 & 1\end{array}\right], X=\left[\begin{array}{l}x \\ y \\ z\end{array}\right]$