Results 1 to 4 of 4

Math Help - adding and dividing fractions

  1. #1
    Super Member
    Joined
    Oct 2008
    From
    Bristol, England
    Posts
    897

    adding and dividing fractions

    this is my question:

    (3 \frac{1}{7} + \frac{1}{4}) divided \frac{3}{4}

    how would i work this question out???
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    Sep 2007
    Posts
    56
    Quote Originally Posted by andyboy179 View Post
    this is my question:

    (3 \frac{1}{7} + \frac{1}{4}) divided \frac{3}{4}

    how would i work this question out???
    First, you should combine the fractions in the parenthesis. To do this, find a common denominator:

    3\frac{1}{7} = \frac{22}{7} = \frac{88}{28}
    \frac{1}{4} = \frac {7}{28}


    Now we can add the two fractions:

    \frac{88}{28} + \frac{7}{28} = \frac{95}{28}

    Now divide:

    \frac{95}{28} \div \frac{3}{4}

    Dividing like that makes the problem harder, so we'll multiply \frac{109}{28} by the reciprocal of \frac{3}{4}, which means we do this:

    \frac{95}{28} \times \frac{4}{3} = \frac {95}{21}
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Jul 2009
    Posts
    593
    Thanks
    4
    This probably goes in the other section but do you mean this:

    \frac{3\frac{1}{7}+\frac{1}{4}}{\frac{3}{4}}?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Super Member
    Joined
    Oct 2008
    From
    Bristol, England
    Posts
    897
    Quote Originally Posted by Cursed View Post
    First, you should combine the fractions in the parenthesis. To do this, find a common denominator:

    3\frac{1}{7} = \frac{22}{7} = \frac{88}{28}
    \frac{1}{4} = \frac {7}{28}


    Now we can add the two fractions:

    \frac{88}{28} + \frac{7}{28} = \frac{95}{28}

    Now divide:

    \frac{95}{28} \div \frac{3}{4}

    Dividing like that makes the problem harder, so we'll multiply \frac{109}{28} by the reciprocal of \frac{3}{4}, which means we do this:

    \frac{95}{28} \times \frac{4}{3} = \frac {95}{21}

    hi thanks for answering!!!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: December 13th 2010, 03:53 AM
  2. Adding Fractions
    Posted in the LaTeX Help Forum
    Replies: 4
    Last Post: May 21st 2009, 02:21 PM
  3. Adding More than Two Fractions
    Posted in the Math Topics Forum
    Replies: 2
    Last Post: August 13th 2008, 02:19 PM
  4. Adding and sub fractions
    Posted in the Algebra Forum
    Replies: 1
    Last Post: March 7th 2008, 07:53 AM
  5. Adding fractions
    Posted in the Algebra Forum
    Replies: 3
    Last Post: January 29th 2007, 11:00 AM

Search Tags


/mathhelpforum @mathhelpforum