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General
Easy

Question

By eliminating a comma b comma c from the Homogeneous Equations x equals fraction numerator a over denominator b minus c end fraction comma y equals fraction numerator b over denominator c minus a end fraction comma z equals fraction numerator c over denominator a minus b end fraction where a comma b comma c not all zero then x y plus y z plus z x equals

  1. 1
  2. negative 1
  3. 2
  4. 0

The correct answer is: negative 1

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