Answer
Cramer's rule is not applicable.
Work Step by Step
Use zero for the missing variable.
The given system of equations is
$\left\{\begin{matrix}
3x& -&2y&=&4\\
6x& -&4y & =&0
\end{matrix}\right.$
Determinant $D$ consists of the $x$ and $y$ coefficients.
$D=\begin{vmatrix}
3&-2 \\
6& -4
\end{vmatrix}=(3)(-4)-(6)(-2)=-12+12=0$
We have $D=0$ hence, the Cramer's rule is not applicable.
