
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 sets $A={x|a-1≤x≤2a+3}$, $B={x|-2≤x≤4}$, and the universal set $U=R$
(Ⅰ) When $a=2$, find $A∪B$ and $(∁_{R}A)∩B$;
(Ⅱ) If $A∩B=A$, find the range of values for the real number $a$.

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