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|(a,b,c),(a-b,b-c,c-a),(b+c,c+a,a+b)|=...

`|(a,b,c),(a-b,b-c,c-a),(b+c,c+a,a+b)|=`

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|(b+c,a+b,a),(c+a,b+c,b),(a+b,c+a,c)|=

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