![\large\boxed{\left[\begin{array}{ccc}6&5\\5&4\end{array}\right]X=\left[\begin{array}{ccc}3\\4\end{array}\right] }](/tpl/images/0024/8234/c61a5.png)
![\text{Substitute:}\\\\\left[\begin{array}{ccc}-6&5\\5&4\end{array}\right] \cdot\left[\begin{array}{ccc}8\\-9\end{array}\right] =\left[\begin{array}{ccc}(-6)(8)+(5)(-9)\\(5)(8)+(4)(-9)\end{array}\right] =\left[\begin{array}{ccc}-93\\4\end{array}\right] \neq\left[\begin{array}{ccc}3\\4\end{array}\right]](/tpl/images/0024/8234/be2b2.png)
![\left[\begin{array}{ccc}6&5\\5&4\end{array}\right] \cdot\left[\begin{array}{ccc}8\\-9\end{array}\right] =\left[\begin{array}{ccc}(6)(8)+(5)(-9)\\(5)(8)+(4)(-9)\end{array}\right] =\left[\begin{array}{ccc}3\\4\end{array}\right]\qquad\bold{CORRECT\ :)}](/tpl/images/0024/8234/19abc.png)
Which matrix equation has the solution
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