
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
A certain clothing store opened, selling $a$ pieces of clothing on the first day, $4$ more pieces on the second day than the first day, and $7$ fewer pieces than twice the second day's sales on the third day. Find an expression for the number of pieces sold on the third day.

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