
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 the following:<br/>$(1)12-\left(-18\right)+\left(-11\right)-15$;<br/>$(2)-{2^2}÷\frac{4}{9}×{(-\frac{2}{3})^2}$;<br/>$(3)\left(-3\right)\times (-\frac{7}{5})+(-1\frac{3}{7})$;<br/>$(4)2\frac{1}{3}-2\frac{3}{5}+5\frac{2}{3}-4\frac{2}{5}$.

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