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common denominator

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35 articles trouvés pour ce sujet.
An equation with fractions 2016-03-09
Ed pose la question :
7/10-___ +3/2=6/5
Penny Nom lui répond.
Adding mixed numbers 2013-11-20
Kathy pose la question :
1 3/4 + 1 2/3= ?

5 1/2 - 2 5/6= ?

Penny Nom lui répond.
{(1+x)^1/3-1/3X(1+x)^-2/3}/(1+x)^2/3 2013-06-17
STEPHEN pose la question :
Penny Nom lui répond.
8 3/8 - 6 1/4 2011-03-21
lenora pose la question :
explain an error pattern in each of the following. 8 3/8 - 6 1/4 = 2 2/4
Penny Nom lui répond.
1/a^2 + 1/b^2 2011-01-19
robert pose la question :
If (a + b)^2 = 81 and ab = 18, find the value of 1/a^2 + 1/b^2 ?
Penny Nom lui répond.
x/200+x/400+x/600+x/800 2010-10-08
Ashishthombre pose la question :
step by step LCM of x/200+x/400+x/600+x/800
Penny Nom lui répond.
Algebraic fractions 2010-04-22
rory pose la question :
Robert Dawson and Harley Weston lui répond.
Least common denominator 2010-02-13
Priscila pose la question :
3/8 + 4/5 + 7/3 + 9/10 = ?

Thank you for your assistance.


Penny Nom lui répond.
Combining fractions 2010-02-10
Nick pose la question :
Combine the fractions

2m/t + 5/mt

Penny Nom lui répond.
Lowest common denominator 2008-05-31
marlene pose la question :
cant get the common lowest denominator of 10,46,64
Janice Cotcher lui répond.
x/4 = 3 1/2 2008-05-30
Kelsey pose la question :
How do you solve for "X" in the problem below?

--- = 3 1/2


Victoria West lui répond.
Ordering fractions 2007-11-15
DEL pose la question :
Hi. I feel really stupid ! I'm a mature student and i have completely forgotten How to find out the order of fractions from largest to smallest. I Have been put this poser; 7/4...1/6....7/2 Can you please tell me what is the largest and lowest? Will be very grateful....thank you
Gabe Potter lui répond.
I need to order 3/11, 1/8, 2/9 from least to greatest 2007-10-19
Andrew pose la question :
I need to order 3/11, 1/8, 2/9 in least to greatest.
Penny Nom lui répond.
Adding algebraic fractions 2007-08-14
John pose la question :
Ive completely forgot anything to do with the subject mentioned, so my question is straight to the point..

I need to know how to do the following problem (Preferably do not give me an answer though) (k/3k-8) - (4/k+2)

Penny Nom lui répond.
Simplifying an algebraic fraction expression 2007-07-25
Jessica pose la question :
How do I simplify b/(b2-25) + 5/(b+5) - 6/b?
Stephen La Rocque lui répond.
Common denominator 2007-01-10
A parent pose la question :
what is the common denominator of 3/5, 2/7 and 4/8?
Stephen La Rocque lui répond.
Order the fractions from least to greatest 2007-01-04
Justin pose la question :
I am a sixth grader, and I am having trouble with the last question in my homework assisgnment. 1/6, 2/5, 3/7, 3/5!
Stephen La Rocque and Penny Nom lui répond.
Least common denominator 2006-10-04
Paulette pose la question :
Why is the LCD of 3/4 and 4/8 not the product of 4 and 8?
Penny Nom lui répond.
1/x + 1/y 2006-08-11
Sonya pose la question :
what is 1/x+1/y = ? is it equal to 1/x+y or what?
Penny Nom lui répond.
The lowest denominator 2006-07-02
Lisa pose la question :

What is the lowest denominator for the following numbers:

a) 26
b) 21
c) 47

Stephen La Rocque lui répond.
Adding fractions 2006-03-26
Barbara pose la question :
I know that to subtract 1/4 from 2/3 I must find a common denom. Now the 2/3 becomes 8/12.....i understand the 12, but where does the 8 come from?
Penny Nom lui répond.
Adding improper fractions 2005-11-25
Paula pose la question :
I would like a simple step by step explanation on how to add improper fractions.
Penny Nom lui répond.
Rational expressions 2005-11-15
Zach pose la question :
I can solve easy problems such as (x/2)+3=2+(3x/4). That is easy because the Lowest Common Denominator is 4. But what really gets me stuck is a problem like this one. (6/x-2) = ( 21/(x-2)(x+2) )+ 1.
Penny Nom lui répond.
The least common denominator 2004-11-03
A student pose la question :
Write the LCD for each pair of fractions.

13. 1/3,1/5

14. 2/7,1/4

15. 3/4,3/5

Penny Nom lui répond.
Rational expressions 2004-09-24
A student pose la question :
In general, I understand rational expressions except when it comes to solving problems such as:

x+y/2x-y - 2x/y-2x or m-4/3m-4 + 3m+2/4-3m

I am confounded by the issue of having to find a common denominator. For example, if I tried to solve these problems by multiplying both denominators they would still be uncommon.

Claude Tardif lui répond.
Subtracting fractions 2004-05-11
Filipe pose la question :

_5_ - __7__
6ab 8a

Penny Nom lui répond.
A/30 + B/105 = (7A + 2B)/x 2004-02-05
Jim pose la question :
If A/30 + B/105 = (7A + 2B)/x and A, B, and x are integers greater than 1, what must x equal?
Penny Nom lui répond.
Adding fractions 2003-11-16
Ken pose la question :
My name is Ken and I am taking my GED course for my High School and have not been in a class for 35 years. I am doing this for re-training. I am at the part about fractions. Here is an example that I am having trouble with.

1 3/7 + 4 2/3 + 11/21

They have no common denominators. Could you PLEASE help me. If you could send me a step by step explanation it would be greatly appreciated.

Penny Nom lui répond.
Subtracting rational expressions 2003-05-10
Simone pose la question :
hi, i'm totally lost. i understand that you need to find a lowest common denominator to subtract two fractions (rational expressions) with different denominators. but what if the denominators are "x-1" and "x". is x the common denominator? if so what happens to the "-1"? do you know of any live online help i can get with the following:

3/(x-1) - (1-2x)/x

i've looked through my notes and have no examples that quite match that i can follow to get through it. please help!
Penny Nom lui répond.

The least common denominator 2003-01-21
Brittan pose la question :
Hi there I need help! My name is Brittany and i am in the 6th grade.

I need help finding the least common denominator(LCD), and the book says Find the LCM of the denominators and i've done that and then it says write equivalent fractions,using the LCM as the least commonn denominator.The directions say Use the LCD to write each pair as like fractions. and the problem is 1/8 and 5/40. Could u explain how in the word u do this? Thanks a lot


Penny Nom lui répond.
Rational expressions 2002-10-03
Ashley pose la question :
1/x(squared) + 5/xy
Penny Nom lui répond.
Common Denominator 2002-08-26
Slobodanka pose la question :
What is a Common Denominator?
Penny Nom lui répond.
Adding and subtracting rational expressions 2001-05-03
Donna pose la question :
Adding and subtracting Rational expressions. I am in grade 10 and I am a student here is an example of the questions:

1/(x+1) - 1/(x-1) = ?

Penny Nom lui répond.
Adding Fractions 1998-10-03
Pam Bailey pose la question :
Can you help me simplfy this?

(1/2a + 1/3b) - (1/4a - 1/5b) + (1/6a - 1/7)

Harley Weston lui répond.

Fractions 1997-10-20
Rebecca Henry pose la question :
When we add fractions, we find a common denominator and add the numerators When we multiply fractions, we simply multiply both numerators and denominators with no regard to commonality.
  1. Why do we not have to find a common denominator when multiplying?

  2. Why do we multiply both numerators and denominators?

Chris Fisher lui répond.



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