Answer:
[tex] \boxed{x = ā1.839}[/tex]
Step-by-step explanation:
[tex] {6}^{( x + 3)} = 8 \\ (x + 3) = log_{6}(8) \\ x = log_{6}(8) - 3 \\ x = \frac{ log(8) }{ log(6) } - 3 \\ x = 1.1605584217 - 3 \\ \boxed{ x \: is \: exactly = ā1.839441578}[/tex]