Results 1 to 4 of 4

Math Help - algebra problem

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    8

    algebra problem

    5 = 2x + 3y/3x +5y

    how do i isolate for x/y ?

    Thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member Freaky-Person's Avatar
    Joined
    Dec 2006
    From
    Somewhere in Canada
    Posts
    69
    Quote Originally Posted by rish View Post
    5 = 2x + 3y/3x +5y

    how do i isolate for x/y ?

    Thanks
    I'm seeing \frac{3y}{3x} and wondering if maybe something was mistyped. It's not that it's wrong, it's just that the 3 is obviously going to cancel out, so why is it in there...?

    Also, what do you mean by isolate? Do you mean change it into a y= form?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Sep 2009
    Posts
    8
    Oh sorry,

    I mean to say 5x + 6y in the denominator

    I just need to to solve for x an y


    sorry about that
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    12,115
    Thanks
    992
    Quote Originally Posted by rish View Post
    5 = 2x + 3y/3x +5y

    how do i isolate for x/y ?

    Thanks
    I'm assuming ...

    5 = \frac{2x+3y}{3x+5y}

    15x + 25y = 2x + 3y

    since y \ne 0 , divide every term by y ...

    15\cdot \frac{x}{y} + 25 = 2 \cdot \frac{x}{y} + 3

    13\cdot \frac{x}{y} = -22

    \frac{x}{y} = -\frac{22}{13}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Algebra problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: January 12th 2010, 03:08 PM
  2. Need Help for this algebra problem
    Posted in the Algebra Forum
    Replies: 4
    Last Post: January 5th 2010, 07:22 PM
  3. Algebra problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: June 12th 2008, 03:32 PM
  4. algebra problem
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 11th 2008, 10:23 PM
  5. algebra problem world problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 21st 2007, 04:35 PM

Search Tags


/mathhelpforum @mathhelpforum