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13 November, 21:43

Solve the system of linear equations by substitution.

2x-y = 23

x-9 = - 1

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Answers (1)
  1. 14 November, 00:30
    0
    First find x

    X-9=-1

    X = 8

    2 (8) - y=23

    16-y=23

    -y=7

    Y=-7
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