what is 9/5 minus 4/3?

2009-06-14 1:54 pm

回答 (10)

2009-06-14 2:04 pm
✔ 最佳答案
Ok the idea here with fractions with different denominators, is to change both denominators so that they are the same, which will then allow us to add or subtract fractions

We do this by observing the numbers which make up the two denominators and then choosing the lowest common factor.

In this case the numbers are 5 and 3. The lowest common factor here is 15.

We then multiply the bottom number to get 15, and then we multiply the top number by same number we did for the bottom number

for example, to make 5 into 15, we multiply by 3. We then would multiply the 9 on top by 3 too, to make the fraction equivalent to its simplist form (i.e. 9/5 = 27/15)

Therefore: 9/5 - 4/3
= 27/15 - 20/15
=7/15

Hope that helped :)
2009-06-14 9:12 pm
= 9/5 - 4/3
= 27/15 - 20/15
= 7/15

Answer: 7/15

Checking back to 9/5:
= 7/15 + 4/3
= 7/15 + 20/15
= 27/15 or (27/3)/(15/3)
= 9/5
2009-06-14 9:02 pm
9/5 - 4/3
= 27/15-20/15
= (27-20)/15
=7/15
= 0.4666666666666666666666666666666

Please notice that you can keep the answer as 7/15
2009-06-14 9:00 pm
9/5 - 4/3 = (27 - 20) / 15 = 7/15
2009-06-14 9:00 pm
9/5 - 4/3

= 27/15 - 20/15

= 7/15
2009-06-16 4:23 pm
27/15 - 20/15 = 7/15
2009-06-14 11:40 pm
Find the LCM (least common multiple).
3 = 3
5 = ......5
-------------------
...= 3 x 5
...= 15

9/5 - 4/3
= (9 * 3)/(5 * 3) - (4 * 5)/(3 * 5)
= 27/15 - 20/15
= 7/15
2009-06-14 10:43 pm
9/5 minus 4/3 is
27/15 - 20/15 =
7/15.
2009-06-14 9:18 pm
9/5 minus 4/3

The bottom numbers 3 and 5 can both go into 15 so u change the bottom numbers to 15.

?/15 minus ?/15

You then time the top numbers by wht you times the bottom numbers by to get 15.

So you would have to times the 5 by 3 to get 15, so you would then times 9 by 3 to give you 27.

27/15.

You then do the same to the other one, you times 3 by 5 to get 15 so you times 4 by 5 to give you 20.

20/15.

27/15 minus 20/15

=7/15
2009-06-14 9:07 pm
7/15


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