Multiple Choice

A project manager is simplifying a cost-efficiency formula: 12d2−16d−4\frac{12d^2 - 16d}{-4}. After dividing each term of the numerator by the denominator, the manager reaches the intermediate step: −3d2−(−4d)-3d^2 - (-4d). Which fundamental arithmetic rule must be recalled to correctly simplify this expression to −3d2+4d-3d^2 + 4d?

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Updated 2026-09-17

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