Answer
$x=-12$
$y=-60$
Work Step by Step
The second equation is already solved for $y$, then we have to substitute this expression into the first equation:
$5x=y$
First equation:
$\frac{1}{4}x-\frac{1}{5}(5x)=9$
$-\frac{3}{4}x=9$
$x=-12$
$y=5x=5(-12)=-60$
We need to check, if it is the right solution, we substitute x with $-12$ and y with $-60$:
$\frac{1}{4}(-12)-\frac{1}{5}(-60)=-3+12=9$ $\checkmark$
$-60=5(-12)$ $\checkmark$