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math

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solve using multiplication method: 8x-9y=-15 -4x=19+y

  • math -

    Strange way to type it, I read it as
    8x-9y = -15
    -4x = 19+y

    I would double the 2nd:
    -8x = 38+2y
    or
    8x + 2y = -38
    8x - 9y = -15
    subtract them
    11y = -23
    y = -32/11
    sub into original 2nd
    -4x = 19 - 23/11
    -4x = 186/11
    x = -186/44

    x = -186/44 , y = -23/11

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