Results 1 to 4 of 4

Math Help - ......solve the equation

  1. #1
    Member
    Joined
    Dec 2007
    Posts
    98

    ......solve the equation

    I am asked to solve this equation..

    4 over 5m-1 equals 2 over 2m-1


    now, am I to move the the first fraction over to the right? so that it becomes a subtraction or do I move it to left so that it becomes an addition problem!?

    mind you now that the answer is -1, but how!?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    GAMMA Mathematics
    colby2152's Avatar
    Joined
    Nov 2007
    From
    Alexandria, VA
    Posts
    1,172
    Awards
    1
     \frac{4}{5m-1} = \frac{2}{2m-1}

    Multiply both sides by (5m-1)(2m-1)

     \frac{4(5m-1)(2m-1)}{5m-1} = \frac{2(5m-1)(2m-1)}{2m-1}
     4(2m-1) = 2(5m-1)
     8m-4 = 10m-2
     -2 = 2m
    m=-1
    Follow Math Help Forum on Facebook and Google+

  3. #3
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by Morzilla View Post
    I am asked to solve this equation..

    4 over 5m-1 equals 2 over 2m-1


    now, am I to move the the first fraction over to the right? so that it becomes a subtraction or do I move it to left so that it becomes an addition problem!?

    mind you now that the answer is -1, but how!?
    \frac 4{5m - 1} = \frac 2{2m - 1}

    cross-multiply, we get:

    4(2m - 1) = 2(5m - 1)

    can you take it from here?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Member
    Joined
    Dec 2007
    Posts
    98
    ahhhhhh I ok so I was not supposed to move either fraction until the denominator was canceled!!! !! ok I got it now

    Thanks to both of you!!!

    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Solve Differential equation for the original equation
    Posted in the Differential Equations Forum
    Replies: 5
    Last Post: February 21st 2011, 01:24 PM
  2. need to solve summation equation to solve sum(x2)
    Posted in the Statistics Forum
    Replies: 2
    Last Post: July 16th 2010, 10:29 PM
  3. How to solve this equation
    Posted in the Algebra Forum
    Replies: 4
    Last Post: December 8th 2009, 05:45 AM
  4. solve this equation for x
    Posted in the Algebra Forum
    Replies: 2
    Last Post: January 26th 2009, 04:50 AM
  5. Replies: 13
    Last Post: May 19th 2008, 08:56 AM

Search Tags


/mathhelpforum @mathhelpforum