
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
To implement the national drug price reduction policy and bring benefits to the people, a certain drug has undergone two price reductions, with the retail price per bottle reduced from $144$ yuan to $81$ yuan. If the average percentage reduction in price each time is $x$, the equation can be written as ______.

Present the answer in LaTex format: \boxed{Your answer}
user