
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
Before each of the numbers in the following lists, insert either a plus or minus sign so that the value of the resulting expressions is equal to zero:

b) $\begin{array}{llllllllllll}1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 \text {. }\end{array}$

For both tasks, provide at least one solution, or justify that the task has no solution.

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