A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

I feel like such a dummy! I cannot figure out how to subtract mixed numbers w borrowing. I am stuck. Any help?

  • This Question is Closed
  1. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    gotan example to work on?

  2. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and borrowing is fine, the math doesnt mind you borrowing as long as you put it back

  3. amistre64
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[-A\frac bc=-A-\frac{b}{c}\]might be useful to know

  4. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Maybe this example will help? http://www.khanacademy.org/video/subtracting-mixed-numbers-word-problem?playlist=Developmental+Math

  5. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Here's an example \( 4 \frac{1}{2} - 2 \frac{3}{4} \) or, making both fractions have a common denominator \( 4 \frac{2}{4} - 2 \frac{3}{4} \) we can think of this as \( 4+ \frac{2}{4} - (2+ \frac{3}{4}) \) distribute the negative sign, so this is also equal to \( 4+ \frac{2}{4} - 2- \frac{3}{4} \) now if 2/4 were bigger than 3/4 we could just do (4-2) + (2/4-3/4) Actually, we could do that, but that is an ugly answer. Use this idea: 4= 3+1, and 1= 4/4, so 4= 3+ 4/4 and the problem is \( 3+ \frac{4}{4}+\frac{2}{4} - 2- \frac{3}{4} \) switch terms around to get \( 3-2 + \frac{4}{4}+\frac{2}{4} - \frac{3}{4} \) \( (3-2) + (\frac{6}{4} - \frac{3}{4} )\) \( 1 \frac{2}{4} \) or, simplifying the 2/4 \( 1 \frac{1}{2} \)

  6. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.