
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
Given points A(a,-1), B(2,3-b), C(-5,4) in the plane rectangular coordinate system xOy. If AB is parallel to the x-axis and AC is parallel to the y-axis, calculate a+b.

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