
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
Morgan has 15 boxes. Nine of the boxes contain markers, five of the boxes contain crayons, and four of the boxes contain both markers and crayons. How many boxes contain neither markers nor crayons?

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