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30 November, 13:40

Substituting x-4=y and - 5y+8x=29

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  1. 30 November, 13:49
    0
    -5 (x-4) + 8x=29

    -5x+20+8x=29

    3x+20=29

    3x=9

    X=3
  2. 30 November, 13:57
    0
    The answer is x=3. Work shown in the photo above!
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