
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
Kevin has an elm tree in his yard that is $11\frac{2}{3}$ feet tall, an oak tree that is $17\frac{5}{6}$ feet tall, and a pine tree that is $15\frac{1}{2}$ feet tall. What is the average height of these trees? Express your answer as a simplified mixed number.

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