how do you multiply 5/8 ,6/7 ,4/5 together?

Answer 1

(5 / 8) x (6 / 7) x (4 / 5)
= (5 x 6 x 4) / (8 x 7 x 5)
= (6 x 4) / (8 x 7)
= 6 / 14
= 3 / 7

Answer 2

First off some definitions:

Numerator: Top part of fraction. It's the 1 in 1/2.
Denominator: Bottom part of fraction. It's the 2 in 1/2.

1 Nominator
-
2 Denominator.

Well with fractions when you multiply you multiply the numerators by the numerators and the denominators with the denominators.

So lets say with the example:

1  2
- * -
2  4

So when you multiply the numerators (top) together and the denominators together you get:

1 * 2    2
------ =  -
2 * 4    8

It doesn't matter how many fractions you have if they're all multiplied together it's the same.


3   2   4       3 * 2 * 4     24
- *  - *  -  = ------------- =  ----
4   5   8       4 * 5 * 8    160

So as to your question: How do you multiply the following:

5   6   4    5 * 6 * 4    120
- *  - *  - = ----------- =  -----
8   7   5    8 * 7 * 5    280

You can reduce it if you want. I just play with the numbers(divide the top and bottom by the same number) until I get the simplest fraction.

120    6     3
----- = --- =  -
280    14   7

I just looked at the original fraction and saw that they both were divisible by 20. That wasn't enough so I divided by 2 again. In math (to me at least :) ) it really doesn't matter how you got the answer as long as you did it mathematically and you can show your work.

p.s. sorry about the formatting. I did this originally in notepad. I fixed it up as best I could. I wish Yahoo would let me use a monospace font to answer. Hope that helps.

Answer 3

Multiply straight across

(5*6*4)/(8*7*5) =120/280

Then Simplify

Answer 4

All you have to do is line the numbers up, numerators w/ numerators, denominators w/ denominators and multiply:
5 6 4 120
_ x _ x _ = _
8 7 5 280 Now you can simplify:120/280=60/140=30/70=15/35=5/7 The answer is 5/7!

Answer 5

Because of the *COMMUTATIVE* property, you can multiply these fractions in any order.

First, line up two of those fractions like this:
4/9 x 18/7

If you can, cross reduce, like this:
4/9 x 18/7 = 4/1 x 2/7

Then multiply those two cross reduced fractions like this:
4/1 x 2/7 = (4 x 2/ 1 x 7) or 8/7

Then take your solution and do 1-3 all over again with the leftover fraction.


Hope that helped!
* Sorry I didn't use your exact numbers, but I wanted you to figure it out on your own!!!

Answer 6

write the first 5 multiplies of 6

Answer 7

(5/8)(6/7)(4/5)
= (5*6*4)/(8*7*5)
= (6*4)/(8*7)
= 3/7

Answer 8

(5 * 6 * 4)/(8 * 7 * 5)
= 120 / 280
= 3 / 7

Answer 9

(5/8)*(6/7)*(4/5)=(5*6*4)/(8*7*5)
cancelling common terms we get 3/7 ans

Answer 10

just write them and multiply the top numbers together, write that and a horizontal bar and then the bottom numbers and write that under the horizontal bar....multiplying is the easiest thing to do in working with fractions.