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Define the opposite and the absolute value of -15.

The opposite of -15 is -15. The absolute value of -15 is -15.

The opposite of -15 is -15. The absolute value of -15 is 15.

The opposite of -15 is 15. The absolute value of -15 is 15.

The opposite of -15 is 15. The absolute value of -15 is -15.