$5x-3y=9x+4y\text{ and }9x+4y=30$

$x = \frac{210}{47} = 4\frac{22}{47} \approx 4.468085106$
$y = -\frac{120}{47} = -2\frac{26}{47} = -2.5531914893617023$

$y = -\frac{120}{47} = -2\frac{26}{47} = -2.5531914893617023$
$x = \frac{210}{47} = 4\frac{22}{47} = 4.468085106382978$