Question Number 222799 by fantastic last updated on 07/Jul/25
$${x}^{{x}^{{y}} } =\mathrm{9}^{{xy}} \\ $$$${x}+{y}=\mathrm{1} \\ $$
Commented by mr W last updated on 07/Jul/25
$${obvious}:\:{x}=\mathrm{1},\:{y}=\mathrm{0} \\ $$
x-x-y-9-xy-x-y-1-