
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 that the sum of the first $n$ terms of an arithmetic sequence ${\_a\_n}$ is $S\_n$, and $a\_3 + a\_6 = 4$, $S\_5 = -5$.

(1) Find the general term formula of the sequence;
(2) If $T\_n = |a\_1| + |a\_2| + |a\_3| + ... + |a\_n|$, find the value of $T\_5$ and the expression of $T\_n$.

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