Multiple Choice

A drone pilot is monitoring a drone's altitude relative to a cliff edge, currently at 17 meters below the edge (represented as -17). The pilot lowers the drone by another 9 meters, which is written as the subtraction -17 - 9. According to the Subtraction Property, this is equivalent to the addition expression -17 + (-9). What is the drone's new altitude relative to the cliff edge?

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Updated 2026-04-20

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