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desiree3114
22.10.2020 •
Mathematics
A bookstore manager marks down the price of older hardcover books, which originally sell for dollars, by 52%.
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Ответ:
3x3=9
3x8=24 -> 24x4 = 96
7x10=70 -> 70x2 =140
7x12=84 -> 84x2=168
10x12=120 -> 120x2-9=231