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3 October, 12:04

3d - e = 7

D + e = 5

Use the linear combination method

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Answers (1)
  1. 3 October, 12:14
    0
    3D - e = 7

    D + e = 5

    4D = 12

    D = 3

    3 + e = 5

    e = 2

    Your answers are D = 3 and e = 2
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