Results 1 to 2 of 2

Math Help - Solving Systems of Equations

  1. #1
    Newbie
    Joined
    Feb 2008
    Posts
    7

    Solving Systems of Equations

    im having a hard time solving this following equation... any help is appreiated.. thanks


    3X + 5Y = 1
    2X - 3Y = 7
    Follow Math Help Forum on Facebook and Google+

  2. #2
    matthewhaworth
    Guest
    There a two possible ways of solving these equations:

    1. Rearrangement then substitution

    2. Adding the equations (the easier)

    3X + 5Y = 1 x 3
    2X - 3Y = 7 x 5

    9X + 15Y = 3
    10X - 15Y = 35

    9X + 15Y + 10X - 15Y = 38
    19X = 38
    X = 2

    2(2) - 3Y = 7
    4 - 3Y = 7
    4 - 7 = 3Y
    -3 = 3Y
    -1 = Y
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Solving systems of equations help
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: March 9th 2012, 08:30 AM
  2. Replies: 6
    Last Post: November 30th 2011, 02:41 AM
  3. Solving systems of equations
    Posted in the Algebra Forum
    Replies: 3
    Last Post: December 7th 2009, 02:45 PM
  4. solving systems of equations
    Posted in the Algebra Forum
    Replies: 4
    Last Post: November 13th 2009, 12:30 AM
  5. solving systems of equations
    Posted in the Algebra Forum
    Replies: 5
    Last Post: October 9th 2006, 09:46 PM

Search Tags


/mathhelpforum @mathhelpforum