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March 26, 2017

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Okay. So I am completely lost with this... Any help would be great!

3. Solve the system using any method – graphing, substitution, or linear combination. Make sure to show your work.


2x + 5y= 8
x + 3y= 2

  • Algebra 1 - ,

    Whenever you have a variable showing up as an x or y with coefficient of 1 understood, I use substitution

    from the 2nd , x = 2 - 3y, now plug into the 1st

    2(2-3y) + 5y = 8
    4 - 6y + 5y = 8
    -y = 4
    y = -4
    then x = 2 -3(-4) =14

    x= 14 , y = -4

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