
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
In parallelogram $ABCD$, vertices $A$, $B$, and $C$ are located at $A(2, 3)$, $B(6, 0)$, and $C(10, 5)$, with $A$ and $C$ diagonally opposite. Calculate the sum of the coordinates of vertex $D$.

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