
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 $- \frac {π}{2}$ < x < $\frac {π}{2}$, and sinx + cosx = $- \frac {1}{5}$.
(1) Find the value of sinx - cosx.
(2) Find the value of $\frac {sin(π+x)+sin( \frac {3π}{2}-x)}{tan(π-x)+sin( \frac {π}{2}-x)}$.

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