
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 the universal set $U=\mathbb{R}$, the set $A=\{x|x>4\}$, and $B=\{x|-6<x<6\}$:  
(1) Find $A\cap B$;  
(2) Find $\complement_{\mathbb{R}}B$;  
(3) Define $A-B=\{x|x\in A, x\notin B\}$, find $A-B$ and $A-(A-B)$.

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