![Cramer's rule: what is [ax] in the system below?](/tpl/images/00/30/wyndXoNEc2ls8ozl.jpg)
![\left[\begin{array}{cc}-3&-1\\5&1\end{array}\right]](/tpl/images/0485/8065/9469e.png)
⇒ 3rd answer![\left[\begin{array}{cc}a&b\\d&e\end{array}\right]](/tpl/images/0485/8065/3908d.png)
![\left[\begin{array}{cc}c&b\\f&e\end{array}\right]](/tpl/images/0485/8065/9a456.png)
![\left[\begin{array}{cc}a&c\\d&f\end{array}\right]](/tpl/images/0485/8065/4ca66.png)
![\left[\begin{array}{cc}4&-1\\-2&1\end{array}\right]](/tpl/images/0485/8065/70c69.png)
Cramer's rule:
what is [ax] in the system below?
...
Answers: 2
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