
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
The teacher asks Lily to calculate $a - 2b - 3c$, but Lily mistakenly calculates $a - 2(b - 3c)$ and gets an answer of 14. If the correct answer was 2, what is the value of $a - 2b$?

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