Results 1 to 2 of 2

Math Help - Rearranging formula help

  1. #1
    Newbie
    Joined
    Oct 2008
    From
    London
    Posts
    7

    Rearranging formula help

    hi ,

    need some rearranging this formula

     \frac{1}{r} = \frac{1}{q} + \frac{1}{d}

    IF I want to make  r the subject of the formula, how would i go about this?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Moo
    Moo is offline
    A Cute Angle Moo's Avatar
    Joined
    Mar 2008
    From
    P(I'm here)=1/3, P(I'm there)=t+1/3
    Posts
    5,618
    Thanks
    6
    Hello,
    Quote Originally Posted by natali.ferno View Post
    hi ,

    need some rearranging this formula

     \frac{1}{r} = \frac{1}{q} + \frac{1}{d}

    IF I want to make  r the subject of the formula, how would i go about this?
    \frac 1q+\frac 1d=\frac{d+q}{qd}

    So \frac 1r=\frac{d+q}{qd}

    taking the inverse on both sides :

    r=\frac{qd}{q+d}
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Rearranging the formula
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 7th 2011, 09:26 PM
  2. rearranging formula
    Posted in the Algebra Forum
    Replies: 24
    Last Post: May 3rd 2011, 02:14 PM
  3. rearranging formula
    Posted in the Algebra Forum
    Replies: 2
    Last Post: November 22nd 2010, 05:22 PM
  4. rearranging this formula
    Posted in the Business Math Forum
    Replies: 4
    Last Post: August 23rd 2009, 10:11 AM
  5. Rearranging formula
    Posted in the Algebra Forum
    Replies: 1
    Last Post: December 18th 2008, 07:10 AM

Search Tags


/mathhelpforum @mathhelpforum