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Miscellaneous·2013·Easy

If 8x - 9y = 20 and 7x - 10y = 9, then what is 2x - y equal to?

If 8x - 9y = 20 and 7x - 10y = 9, then what is 2x - y equal to?

Options

  1. a.

    10

  2. b.

    11

  3. c.

    12

    Correct answer
  4. d.

    13

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