
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
$(1)$ Simplify: $(3x^{2}-2xy+5y^{2})-2(x^{2}-xy-2y^{2})$;<br/>$(2)$ Simplify and find the value: Given $A=-x-2y-1$, $B=x+2y+2$, when $x+2y=6$, find the value of $A+3B$.

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