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12 April, 18:32

7n-4 = 317n-4=31

n=5

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Answers (1)
  1. 12 April, 21:15
    0
    you have written it a little werid so my answer would be

    31 = 1581 = 31

    Step-by-step explanation:

    7n - 4 = 317n - 4 = 31 (n=5)

    7 (5) - 4 = 317 (5) - 4 = 31

    35 - 4 = 1585 - 4 = 31

    31 = 1581 = 31
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