
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
Let A and B be the sets $A = \{1,2,3\}$ and $B = \{2,3,4\}$, respectively. Define a new operation between sets A and B as $A+B = \{x | x \in A \cup B \text{ and } x \notin A \cap B\}$. Given that $A = \{1,2,3\}$ and $B = \{2,3,4\}$, determine the set $A+B$.

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