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If A' = [(2,5),(2,1),(-3,2)], B = [(2,-1...

If `A' = [(2,5),(2,1),(-3,2)], B = [(2,-1,-2),(4,0,5)] and [(4,5,2),(0,1,4)]` find `A + B and B -C`, show that `A + (B -C) = (A + B) - C`.

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