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17 November, 22:18

3 (2x 4y - 2z) 7 (x y - 4z)

a. 13x 5y - 22z

b. - x - 19y 22z

c. 13x 19y - 34z

d. - x - 5y 34z

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Answers (1)
  1. 17 November, 22:39
    0
    3 (2x + 4y - 2z) + 7 (x + y - 4z) = 6x + 12y - 6z + 7x + 7y - 28z = 13x + 19y - 34z

    Option c is the correct answer.
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