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7. Simplify: 15÷ (14 + 1) - (4 9) + 6 (4 + 5) |
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Answer» Answer: 15 ÷ (14 + 1) - (4 × 9) + 6 (4 + 5) = 15 ÷ 15 - 36 + 6 × 9 = 1 - 36 + 54 = 1 - 90 = -89 |
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