
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. $(-0.9) + 1.5$;
2. $\frac{1}{2} + \left(-\frac{2}{3}\right)$;
3. $1 + \left(-\frac{1}{2}\right) + \frac{1}{3} + \left(-\frac{1}{6}\right)$;
4. $3\frac{1}{4} + \left(-2\frac{3}{5}\right) + 5\frac{3}{4} + \left(-8\frac{2}{5}\right)$.

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