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To find the least common denominator, list the multiples of each denominator. The lowest one they have in common is the LCD.

For example:

2/3 and 3/4:

The multiples of 3 are: 3, 6, 9, 12, 15, 18, 24...

The multiples of 4 are: 4, 8, 12, 16, 20, 24...

The common multiples are 12 and 24. Since 12 is the least, it is the LCM.

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โˆ™ 2012-08-23 17:57:52
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A polynomial of degree zero is a constant term

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Q: How do you find the least common denominator of two fractions?
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How do you find the common denominator of 3 fractions?

Pick two of the fractions and find the Least Common Multiple of those two denominators. Then take that number, and find the Least Common Multiple between that and the third denominator. This number will be the Least Common Denominator between the three fractions.If you don't care to find the Least common denominator, then just take the three denominators, and multiply them together.


Why do you have to find a common denominator?

Addition or subtraction of fractions require "like" fractions: that is, fractions with the same denominator.


How do you put different fractions in increasing order?

Option 1: Find a common denominator for the two fractions. It need not be the least common denominator; for example, for two fractions, if you just multiply the two denominators, you get a common denominator. Convert all the fractions to the common denominator. Then you can compare. Option 2: Convert each fraction to decimal, by dividing the numerator by the denominator. Then you can compare the decimals.


How can you find a common denominator for two unlike fractions?

Find the lowest common multiple of the denominators and adjust the fractions accordingly


What way is subracting fractions with unlike denominators like adding fractions with unlike denominators?

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators.

Related questions

Is it always necessary to find the least common denominator to compare the sizes of fractions?

When comparing fractions you must find a common denominator; by finding the least common denominator it will keep the numbers (numerators and denominator) smaller .


What is the least common denominator for 9 tenths?

You need at least two fractions to find a common denominator.


Find the least common denominator for fractions with denominators 9 12 and 16?

The least common denominator is 144.


How do you find the least common denominator of a set of unlike fractions?

least common denominator is nothing but least common multiple of denominators.


How do you find the common denominator of 3 fractions?

Pick two of the fractions and find the Least Common Multiple of those two denominators. Then take that number, and find the Least Common Multiple between that and the third denominator. This number will be the Least Common Denominator between the three fractions.If you don't care to find the Least common denominator, then just take the three denominators, and multiply them together.


Find the least common denominator for fractions with denominators 9 12 16?

The least common denominator of 9, 12, and 16 is 144.


How do you subtract fractions in simplest form?

You first need to find a common denominator, not necessarily the least common denominator. Next, you rename the fractions according to the common denominator. Only then can you subtract the fractions. After subtraction you should simplify the answer.


Find the least common denominator for fractions with denominators 45 and 42?

630


How do you order 2 or more fractions from least to greatest?

you can find the least common denominator and then order them.


How do you find equivalent fractions with a common denominator and order from least to greatest?

to make your denominator common you have to times a number that equals the same


What is the LCD of 5 8ths?

You need at least two fractions to find a common denominator.


How do you add fractions without the same denominatior?

Find their least common denominator and convert them.

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