
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
Define the operation $\star$ for every pair of real numbers $x \ne y$ as follows:
\[
(x \star y) = \frac{x + y}{x - y}
\]
Calculate the value of $((3 \star 4) \star 5)$.

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