
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
Every book has an International Standard Book Number (ISBN): A B C D E F G H I J, where A B C D E F G H I are arranged from nine digits, and J is the check digit. Let $S = 10A + 9B + 8C + 7D + 6E + 5F + 4G + 3H + 2I$, and let $r$ be the remainder when $S$ is divided by 11. If $r$ is neither 0 nor 1, then it is defined that $J = 11 - r$. (If $r = 0$, then it is defined that $J = 0$; if $r = 1$, then it is defined that $J$ is represented by $x$). Now, there is a book with the ISBN 962y707015, then $y = \boxed{?}$.

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