
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
In a triangle, for $\angle B$ to be the largest angle of the triangle, it must be that $p < y < q$. The side lengths of the triangle are given as follows: $BC = y + 7$, $AC = y + 3$, and $AB = 2y + 1$. What is the least possible value of $q - p$, expressed as a common fraction?

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