Answer:
x is ½
Step-by-step explanation:
[tex]{ \tt{3 {}^{12x - 3} = 27}} \\ { \tt{ {3}^{12x - 3} = {3}^{3} }} \\ { \tt{12x - 3 = 3}} \\ { \tt{12x = 6}} \\ { \tt{x = \frac{1}{2} }}[/tex]
