
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 factory plans to complete the production of a certain part within 20 days. If 4 more parts are produced each day, the production will be completed in 15 days with an additional 10 parts produced. Assume the original plan was to produce $x$ parts per day. According to the problem, we can set up the equation as follows.

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