Math Is Fun Forum
You are not logged in.
- Topics: Active | Unanswered
#1 2010-07-05 05:07:22
- atut
- Member
- Registered: 2008-04-23
- Posts: 30
Fractions
i dont understand how to find the answer for this question
it is:
64/63 + (-18/29) + (16/15) - 6 19/34 
Offline
#2 2010-07-05 05:10:44
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Fractions
Hi atut;
This what you mean?
Simplest way is to just add and subtract 1 at a time. According to the rule:
Follow this so far? Now you go:
Did you follow this and the last step? If you did now for the tough part.
See the term on the right, we convert that to an improper fraction. You go:
34*6 + 19 all over 19. Which is 223 / 34, so we have:
That one you do, and tell me what you get!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3 2010-07-05 21:15:47
- atut
- Member
- Registered: 2008-04-23
- Posts: 30
Re: Fractions
i checked the answer and it is
-7 71531
310590
but how?
Offline
#4 2010-07-05 21:31:44
- Anakin
- Member
- Registered: 2009-10-04
- Posts: 145
Re: Fractions
Nope, Bobby's work seems perfectly correct and I get the same answer.
The only way you can get the answer that you gave is by SUBTRACTING 16/15 rather than adding it like we did. Perhaps you accidentally posted the question incorrectly.
Last edited by Anakin (2010-07-05 21:38:43)
Offline
#5 2010-07-05 21:42:48
- atut
- Member
- Registered: 2008-04-23
- Posts: 30
Re: Fractions
thanks i think it is a negative fraction.
but how do u work it out
Offline
#6 2010-07-05 21:58:34
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Fractions
Hi atut;
Where are you having a problem? Please take a look at post #2. Are you saying that you posted the problem incorrectly..
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#7 2010-07-05 22:08:20
- Anakin
- Member
- Registered: 2009-10-04
- Posts: 145
Re: Fractions
We will turn the first two fractions into one fraction by using their lowest common denominator (1827), and do the same with the second set (510).
Take it from there!
Last edited by Anakin (2010-07-05 22:19:27)
Offline
#8 2010-07-05 22:12:55
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Fractions
Hi Anakin;
Well that shows that you and I can do it but the real mystery is where atut can't. Or maybe he can? I do prefer when some work is done by the original poster otherwise we will never know.
How did you do on your exams?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#9 2010-07-05 22:18:33
- Anakin
- Member
- Registered: 2009-10-04
- Posts: 145
Re: Fractions
My apologies, I edited my post so that it leaves some work to be done.
And the exams were quite well. I think my final mark on the exam was in the high 80s. I guess the late night of vectors helped and that question you helped me with did come up on the exam, just a little differently. So cheers to that! 
Offline
#10 2010-07-05 22:24:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Fractions
Hi Anakin;
No apologies are necessary, I phrased it wrong. Your post was fine. Sometimes, working through the whole problem is excellent help. I do that too. Post any way you like.
I just have no idea where atut is at. If I don't see some of his work. If he would supply some of his ideas then it would be clear.
As for your exam, I am glad you did well, congratulations!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#11 2010-07-05 22:24:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Fractions
Hi Anakin;
No apologies are necessary, I phrased it wrong. Your post was fine. Sometimes, working through the whole problem is excellent help. I do that too. Post any way you like.
I just have no idea where atut is at. If he would supply some of his ideas then it would be clear.
As for your exam, I am glad you did well, congratulations!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#12 2010-07-05 22:31:03
- Anakin
- Member
- Registered: 2009-10-04
- Posts: 145
Re: Fractions
And thank you, now I got only one hard month of full-time summer school left. Speaking of which, I better get ready in a few minutes. Have a fun Tuesday, you two!
Last edited by Anakin (2010-07-05 22:31:24)
Offline
#13 2010-07-05 22:33:53
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Fractions
Hi Anakin;
Cool man, study hard!
Hi atut;
How about doing one for me, a smaller one. Show me all your work. I will help you get through it.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline