
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
Calculate:  
$(1) 12 - (-18) + (-7) - 15$;  
$(2) (-\frac{1}{2}) \times (-8) + (-6) \div (-\frac{1}{3})^{2}$.

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