$$\left. \begin{array} { l } { 3 ^ { 3 ( x + 4 ) } + 3 ^ { 2 x + 1 } = 36 } \end{array} \right.$$
$x=\log_{3}\left(\frac{\sqrt[3]{6377292\sqrt{635466457082}+5083731656657}+\sqrt[3]{5083731656657-6377292\sqrt{635466457082}}-1}{531441}\right)\approx -2.912755515$
