
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
Xiao Hong, while calculating the value of $31 + a$, mistakenly took the "+" sign for a "-" sign, and got the result as 12. What should be the value of $31 + a$?

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