
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 freight ship has arrived on the beautiful island of Sodor. Sir Topham Hatt assigns tasks to the trains and says: "If Thomas and Edward work together, they can finish transporting this shipment in 8 days; if Thomas works alone for 13 days and then Edward works alone for 6 days, they can also finish the task. But now Edward has another task, and this task will be completed by Thomas alone."

How many days will it take for Thomas to complete the task by himself?

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