$3x+4y=20x-2y\text{ and }20x-2y=2$

$x=\frac{6}{43}\approx 0.139534884$
$y = \frac{17}{43} = 0.3953488372093023$

$y = \frac{17}{43} = 0.3953488372093023$
$x = \frac{6}{43} = 0.13953488372093023$