Results 1 to 2 of 2

Thread: "Solving linear systems using equasions"

  1. Mar 3rd 2009, 08:06 PM #1
    Silverstaraptor
    Silverstaraptor is offline
    Newbie Silverstaraptor's Avatar
    Joined
    Jan 2009
    From
    not telling
    Posts
    10

    Exclamation "Solving linear systems using equasions"

    They really shoulddn't be asigning this stuff in middle school. Help, PWEASE?

    3x - y = 30
    -3x + 7y =6
    Follow Math Help Forum on Facebook and Google+
  2. Mar 3rd 2009, 08:10 PM #2
    mr fantastic
    mr fantastic is offline
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    9
    Quote Originally Posted by Silverstaraptor View Post
    They really shoulddn't be asigning this stuff in middle school. Help, PWEASE?

    3x - y = 30
    -3x + 7y =6
    Multiply the top equation by 7. Now add the two equations together:

    18x = 216 etc.
    Follow Math Help Forum on Facebook and Google+
« Interest problem | Help with turning a fraction into a exponent »

Similar Math Help Forum Discussions

  1. Help with some "quadratics": Non-Linear Systems of Equations.
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: Jul 18th 2011, 07:32 PM
  2. Ellipse: extract "minor axis" (b) when given "arc length" and "major axis" (a)
    Posted in the Calculus Forum
    Replies: 2
    Last Post: Apr 24th 2011, 07:01 AM
  3. Definition clarification: "state-space", "support" and "sample space"
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: Oct 25th 2010, 04:45 AM
  4. Circle Involute - Solving "y" for any given "x"
    Posted in the Geometry Forum
    Replies: 4
    Last Post: Mar 29th 2010, 04:05 PM
  5. Intermediate algebra - "Solve each systems"
    Posted in the Algebra Forum
    Replies: 5
    Last Post: Jan 23rd 2010, 11:36 PM

/mathhelpforum @mathhelpforum