
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
What is the sum of all real numbers $x$ for which the median of the numbers $2, 5, 7, 20,$ and $x$ is equal to the mean of those five numbers?
A) -9
B) 0
C) 1
D) 8.5
E) 20

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