
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 (8m-7n)-2(m-3n);  
(2) Simplify and find the value: 5(3x^2y-xy^2)-(xy^2+3x^2y), where x=1/2, y=-1.

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