Question

If $D=7,D_x=35$ and $D_y=42$ are the values of the determinants for certain simultaneous equations in $x$ and $y$, then find the values of $x$ and $y$.

Answer 1

Given, $D=7,D_x=35$ and $D_y=42$
Now $x=\frac{D_x}{D}=\frac{35}{7}=5$
and $y=\frac{D_y}{D}=\frac{42}{7}=6$
$\therefore$ The value of $x$ and $y$ is $5$ and $6$ respectively.