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-   -   How to solve with elimination, x+y=90, y=4x+15 (https://www.askmehelpdesk.com/showthread.php?t=464559)

  • Apr 13, 2010, 04:45 PM
    CarolD22
    how to solve with elimination, x+y=90, y=4x+15
    Can anyone solve with elimination? Show work.
    x+y=90
    y=4x+15
  • Apr 13, 2010, 05:00 PM
    ballengerb1

    You take it in steps. Since you know what Y equals sub that into the first equation X+4X+15=90, that means 5X (take away 15 from both sides) = 75. Try the next step

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