anonymous
  • anonymous
How do you reduce a fraction?
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Try a tutorial online, for example http://www.webmath.com/redfract.html and if you have a question come back and we help you for suere
anonymous
  • anonymous
Thank you.
anonymous
  • anonymous
You cancel factors that are common to the numerator and the denominator.

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anonymous
  • anonymous
Please view my question
anonymous
  • anonymous
No, we won't.
anonymous
  • anonymous
@emunrradtvamg Thank you very much I don't really have anything else but if I do I know you'll help me (If your online).
anonymous
  • anonymous
Sure when I can, I try to help. That is what people are for.
anonymous
  • anonymous
Cool. Thanks again.
anonymous
  • anonymous
Can you help me w/ this? Add the following fractions. Be sure to find the common denominator (multiple) and then simplify
1 Attachment
anonymous
  • anonymous
Ok
anonymous
  • anonymous
Did you find a common denominator for them?
anonymous
  • anonymous
In the first equation (3/16) the only thing to do is to carry out numerical division. So you will end up with 0.1875
anonymous
  • anonymous
Ok
anonymous
  • anonymous
No he's got to add two fractions by finding a common denominator, then adding the numerators of the equivalent fractions. Not convert to decimal...
anonymous
  • anonymous
Ok sorry. Just got what you really want. Wait. I definitively know what you want.
anonymous
  • anonymous
Ok
anonymous
  • anonymous
Buggy, did you find a common denominator already?
anonymous
  • anonymous
From what?
anonymous
  • anonymous
What are the denominators for the fractions you are trying to add?
anonymous
  • anonymous
3\6 + 5\48
anonymous
  • anonymous
Those are the fractions (except it's 3/16). which part of the fraction is the denominator?
anonymous
  • anonymous
Oh ok. ?
anonymous
  • anonymous
Ok now Im gonna teach you how to get the common denominator.
anonymous
  • anonymous
\[\frac{Numerator}{Denominator}\]
anonymous
  • anonymous
Ok.
anonymous
  • anonymous
The part on bottom is the denominator.
anonymous
  • anonymous
Ok.
anonymous
  • anonymous
So now, what are the two denominators you are working with?
anonymous
  • anonymous
16 and 48.
anonymous
  • anonymous
Is that right?
anonymous
  • anonymous
Correct. Now, we are looking for common multiplies of those two numbers. So what are the multiples of 16?
anonymous
  • anonymous
16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224, 240, 256, 272, 288, 304,
anonymous
  • anonymous
Did you figure that out? or type it in somewhere?
anonymous
  • anonymous
Right?
anonymous
  • anonymous
Do you see any multiples of 48 in that list?
anonymous
  • anonymous
Yes
anonymous
  • anonymous
What is the smallest multiple of 48 you see there?
anonymous
  • anonymous
3?
anonymous
  • anonymous
Ok the first thing you have to do is to divide the two numbers (16 and 48) in the denominator by 2. If they both are divisible by 2, then you save this number 2. Next, you have to devide the remaining of the last divison by two again. the new two numbers are 8 and 26. If both numbers are divisible by 2 again. You save this number (2) again. 16 48 * .---------- 8 26 * 2 This number is saved 4 13 * 2 This number is saved too * Of course the remaining numbers are not divisible by 2 nor 3, and so on. This means the the common denominator is 2*2 =4 Question? Remember this is the first step
anonymous
  • anonymous
48 is the smallest multiple that 16 and 48 have in common.
anonymous
  • anonymous
Ok...
anonymous
  • anonymous
So what do I do w/ the 48?
anonymous
  • anonymous
So 16 * 3 = 48. Now we need to make both of the fractions have that denominator. Since 5/48 already has that for the denominator we don't need to change it.
anonymous
  • anonymous
So you can just write 5/48 on the next column over. But to make 3/16 have a denominator of 48, we need to multiply the bottom by 3. In order to do that and keep the ratio the same, we must also multiply the top by 3.
anonymous
  • anonymous
? you lost me....
anonymous
  • anonymous
\[\frac{3}{48} * \frac{3}{3} = ?\]
anonymous
  • anonymous
Err. \[\frac{3}{16} * \frac{3}{3}\]
anonymous
  • anonymous
We need to change the denominator of the 3/16 so it is also using our lowest common denominator.
anonymous
  • anonymous
We can multiply any number by 1 without changing it. Since 3/3 = 1, we can multiply our fraction by 3/3 and it will still have the same value.
anonymous
  • anonymous
But now it will have 48 for a denominator.
anonymous
  • anonymous
Hold on.... Let's move on to a different question...
anonymous
  • anonymous
If you are having trouble with this still I suggest this video: http://www.khanacademy.org/video/adding-fractions-with-unlike-denominators?playlist=Developmental%20Math
anonymous
  • anonymous
Ok...
anonymous
  • anonymous
He explains very well the process for doing this.
anonymous
  • anonymous
Ok...
anonymous
  • anonymous
(Including mine,) You have 56 replies!
anonymous
  • anonymous
You can divide both numerator and denominator by the greatest common divisor of the two. ;-)
anonymous
  • anonymous
Cool thanks..

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