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Algebra 1- Math

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use substitution to solve the system 2x-y=-4 -3x+y=-9

  • Algebra 1- Math -

    2x - y = -4
    -3x + y = -9

    From the first equation:

    y = 2x + 4
    Substitute this into the second equation:

    -3x + 2x + 4 = -9
    -x + 4 = -9
    -x = -13
    x = 13

    Then plug this answer back into the first equation

    2*13 - y = -4
    26 - y = -4
    -y = -30
    y = 30

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