
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
On a runway with an east-west direction, with the east direction as the positive direction, if Xiaofang walks $8m$ eastward, it is denoted as "$+8m$". Then, if she walks $10m$ westward, it should be denoted as ____.

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