
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
It is known that the weights of A, B, C, and D are all integers in kilograms, with A being the lightest, followed by B, C, and D. The weights of every two people combined are as follows (in kilograms): 45, 49, 54, 55, 60, 64. Find the weight of D in kilograms.

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