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12 September, 03:33

Wich expression is not equivalent to the other 3? A) - 9-7n+16n B) 9 (n-9) C) n-9+8n D) 9n-9

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Answers (2)
  1. 12 September, 03:53
    0
    A) - 9-7n+16n=-9+n (16-7) = - 9+9n=9n-9

    B) 9 (n-9) = 9*n-9*9=9n-81

    C) n-9+8n=n (1+8) - 9=9n-9

    D) 9n-9

    So the answer is B)
  2. 12 September, 05:52
    0
    A) - 9+9n

    B) 9n-81

    C) 9n-9

    D) 9n-9

    B is not equivalent
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