математика

Помогите с решением! ǀ-5ǀ + ǀ-8ǀ - ǀ-6ǀ + ǀ-12ǀ - ǀ-11ǀ = ǀ -8ǀ + ǀ14ǀ - ǀ-11ǀ - ǀ15ǀ + ǀ12ǀ = ǀ ǀ -22 ǀ - ǀ12ǀ - ǀ -10ǀ - ǀ5ǀ ǀ = ǀ-7ǀ + ǀ-6ǀ - ǀ-3ǀ + ǀ-32ǀ - ǀ-15ǀ = ǀ -9ǀ + ǀ19ǀ - ǀ-21ǀ - ǀ1ǀ + ǀ17ǀ = ǀ ǀ -43 ǀ - ǀ12ǀ - ǀ -10ǀ - ǀ20ǀ ǀ = ǀ-5ǀ + ǀ-8ǀ - ǀ-6ǀ + ǀ-12ǀ - ǀ-11ǀ = ǀ -8ǀ + ǀ14ǀ - ǀ-11ǀ - ǀ15ǀ + ǀ12ǀ = ǀ ǀ -22 ǀ - ǀ12ǀ - ǀ -10ǀ - ǀ5ǀ ǀ = ǀ-7ǀ + ǀ-6ǀ - ǀ-3ǀ + ǀ-32ǀ - ǀ-15ǀ = ǀ -9ǀ + ǀ19ǀ - ǀ-21ǀ - ǀ1ǀ + ǀ17ǀ = ǀ ǀ -43 ǀ - ǀ12ǀ - ǀ -10ǀ - ǀ20ǀ ǀ = ǀ-5ǀ + ǀ-8ǀ - ǀ-6ǀ + ǀ-12ǀ - ǀ-11ǀ = ǀ -8ǀ + ǀ14ǀ - ǀ-11ǀ - ǀ15ǀ + ǀ12ǀ = ǀ ǀ -22 ǀ - ǀ12ǀ - ǀ -10ǀ - ǀ5ǀ ǀ = ǀ-7ǀ + ǀ-6ǀ - ǀ-3ǀ + ǀ-32ǀ - ǀ-15ǀ = ǀ -9ǀ + ǀ19ǀ - ǀ-21ǀ - ǀ1ǀ + ǀ17ǀ = ǀ ǀ -43 ǀ - ǀ12ǀ - ǀ -10ǀ - ǀ20ǀ ǀ =

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I-9I+I19I-I-21I-1I+I17I=23

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