intermediate algebra

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solve using the substition method. show your work. if the system has no solution or an iniinite number of solutions, state this 18x+6y=78
12x+54y=-48

  • intermediate algebra -

    3x + y = 13
    so, y = 13 - 3x

    2x + 9y = -8
    2x + 9(13 - 3x) = -8
    x = 5
    so, y = -2

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