Answer to Question #341652 in Linear Algebra for jack

Question

$\begin{Bmatrix} a \\ b \end{Bmatrix} = 1/314*\begin{bmatrix} 198 & -26 \\ -26 & 5 \end{bmatrix}\begin{Bmatrix} 1230 \\ 6950 \end{Bmatrix}$

Answer 1

$\begin{Bmatrix} a \\ b \end{Bmatrix}=1/314*\begin{bmatrix} 198 & -26 \\ -26 & 5 \end{bmatrix} \begin{Bmatrix} 1230 \\ 6950 \end{Bmatrix}$

$\begin{Bmatrix} a \\ b \end{Bmatrix}=1/314 *\begin{bmatrix} 243540-180700 \\ -31980+34750 \end{bmatrix}$

$\begin{Bmatrix} a \\ b \end{Bmatrix}=1/314*\begin{bmatrix} 62840 \\ 2770 \end{bmatrix}$

$\begin{Bmatrix} a \\ b \end{Bmatrix}=\begin{bmatrix} 31420/157\\ 1385/157 \end{bmatrix}$