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22 September, 18:16

Reagan is reading a mystery novel. She has 3 chapters left to read, and each chapter contains 12 pages. The book has 342 pages in all. Which of the following gives the number of pages Reagan has already read?

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  1. 22 September, 18:30
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    12 * 3 = 36 (Pages left to read)

    342 - 36 = 306

    342 + (-12) + (-12) + (-12)

    342 - 12 - 12 - 12

    342 - 36

    306

    342 - (12 * 3), 306, and 342 + (-12) + (-12) + (-12)
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