Problem:
Find all real solutions to $6^{-x-18}6^{11 x+5} = 36^{15-9 x}$
Answer:
$\left\{\left\{x\to \frac{43}{28}\right\}\right\}$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/exponential_equations/4474.txt'}