How do you reduce a fraction?

- anonymous

How do you reduce a fraction?

- jamiebookeater

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- 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

Thank you.

- anonymous

You cancel factors that are common to the numerator and the denominator.

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- anonymous

Please view my question

- anonymous

No, we won't.

- 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

Sure when I can, I try to help. That is what people are for.

- anonymous

Cool. Thanks again.

- 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

Ok

- anonymous

Did you find a common denominator for them?

- 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

Ok

- 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

Ok sorry. Just got what you really want. Wait. I definitively know what you want.

- anonymous

Ok

- anonymous

Buggy, did you find a common denominator already?

- anonymous

From what?

- anonymous

What are the denominators for the fractions you are trying to add?

- anonymous

3\6 + 5\48

- anonymous

Those are the fractions (except it's 3/16). which part of the fraction is the denominator?

- anonymous

Oh ok. ?

- anonymous

Ok now Im gonna teach you how to get the common denominator.

- anonymous

\[\frac{Numerator}{Denominator}\]

- anonymous

Ok.

- anonymous

The part on bottom is the denominator.

- anonymous

Ok.

- anonymous

So now, what are the two denominators you are working with?

- anonymous

16 and 48.

- anonymous

Is that right?

- anonymous

Correct. Now, we are looking for common multiplies of those two numbers. So what are the multiples of 16?

- anonymous

16, 32, 48, 64, 80, 96, 112, 128, 144, 160,
176, 192, 208, 224, 240, 256, 272, 288, 304,

- anonymous

Did you figure that out? or type it in somewhere?

- anonymous

Right?

- anonymous

Do you see any multiples of 48 in that list?

- anonymous

Yes

- anonymous

What is the smallest multiple of 48 you see there?

- anonymous

3?

- 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

48 is the smallest multiple that 16 and 48 have in common.

- anonymous

Ok...

- anonymous

So what do I do w/ the 48?

- 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

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

? you lost me....

- anonymous

\[\frac{3}{48} * \frac{3}{3} = ?\]

- anonymous

Err.
\[\frac{3}{16} * \frac{3}{3}\]

- anonymous

We need to change the denominator of the 3/16 so it is also using our lowest common denominator.

- 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

But now it will have 48 for a denominator.

- anonymous

Hold on.... Let's move on to a different question...

- 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

Ok...

- anonymous

He explains very well the process for doing this.

- anonymous

Ok...

- anonymous

(Including mine,) You have 56 replies!

- anonymous

You can divide both numerator and denominator by the greatest common divisor of the two. ;-)

- anonymous

Cool thanks..

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