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7 December, 08:17

Which expression has a simplified expression of 5x - 12?

A. 3 (4x - 4) - 7x

B. - 3 (4x - 4) - 7x

C. 3 (-4x + 4) - 7x

D. - 3 (-4x - 4) - 7x

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Answers (2)
  1. 7 December, 10:01
    0
    The answer is A. it can be simplified
  2. 7 December, 11:25
    0
    A. 3 (4x - 4) - 7x = 12x - 12 - 7x = 5x - 12 yes

    B. - 3 (4x - 4) - 7x = - 12x + 12 - 7x = - 19x + 12 no

    C. 3 (-4x + 4) - 7x = - 12x + 12 - 7x = - 19x + 12 no

    D. - 3 (-4x - 4) - 7x = 12x + 12 - 7x = 5x + 12 no

    Answer is A.
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