
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
Suppose the mean of one set consisting of seven numbers is 18, and the mean of another set consisting of eight numbers is 16. What is the mean of all fifteen numbers combined?

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