A textbook order was shipped in 3 identical boxes, each containing 8 pounds of books, and a fourth box containing 6 pounds of books. If 15 copies of the same textbook were in the boxes, which expression shows how to determine the weight of each textbook? (8 × 3 + 6) ÷ 15 8 × 3 + 6 ÷ 15 (8 × 3) + (6 ÷ 15) 8 × (3 + 6) ÷ 15
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