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12 February, 01:21

3x-5y=60

4x+5y=-4

what is the system of linear equation

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Answers (1)
  1. 12 February, 02:47
    0
    (3x-5y=60)

    4x+5y=-4

    3 (8) - 5 (7.2) = 60

    4 (8) + 5 (-7.2) = -4

    7x=56

    :7. : 7

    x=8

    3 (8) - 5y=60

    4 (8) + 5y=-4

    32+5y=-4

    -32. - 32

    5y=-36

    :5. : 5

    y=7.2
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