Problem:
Solve the following system of three equations: 
$11 x+5 y+19 z-10=0$, $-18 x-20 y+3 z-3=0$, $-11 x-12 y+20 z+16=0$
Answer:
$x=\frac{3648}{815}$, $y=-\frac{3519}{815}$, $z=-\frac{757}{815}$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/system_of_equations/46063.txt'}