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Algebra 1ChallengeFoundations

Foundations · Challenge problem

Evaluate   ∣ ∣ ∣−2∣−5 ∣−∣ 3−∣−7∣ ∣ ∣\;\left|\ \big|\,|{-2}| - 5\,\big| - \big|\,3 - |{-7}|\,\big|\ \right|.