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Say there's 2/3 and 1/2, it's called Least Common Denominator, so you need to look at the denominators which are 3 and 2.

Now list the multiples:

3: 1, 3, 6...

2: 1, 2, 4, 6...

As you can see both of them go into 6 the least amount of times because it's the one that they both can multiply.

Denominators are whole numbers. Find it just like the LCM.

Example: 1/30 and 1/42

Factor them.

2 x 3 x 5 = 30

2 x 3 x 7 = 42

Combine the factors, eliminating duplicates.

2 x 3 x 5 x 7 = 210, the LCD

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Q: How do you find the LCD of two fractions?
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Related questions

What is the LCD of 14 over 15?

You need at least two fractions to find an LCD.


How the LCD of two or more fractions could be of use?

Once you find the LCD, convert the fractions to their equivalents and then you can add and/or subtract them correctly.


IS THE LCD OF TWO FRACTIONS THE SAME AS THE LCM NUMERATORS AND FRACTIONS?

The LCD of two fractions is the same as the LCM of their denominators.


What is the LCD of 5 8ths?

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


Do you need to find the LCD in multipliying?

When multiplying fractions, it is not necessary to find the LCD first.


Common denominator of 5712?

You need at least two fractions to find an LCD. If that's 5/7 and 1/2, the LCD is 14.


How do you write fractions as equivalent fractions with the LCD?

(1) find the LCD. (2) find the factor that each original denominator needs to be multiplied by to get the LCD. (3) multiply both the numerator and the denominator by that factor.


What is the LCD of 1over 3?

LCD means lowest (or least) common denominator, and that implies there must be at least two fractions involved for something to be common to both of them. There is, therefore, no sensible answer to this question.


What is the lcd of numerator 2 and denominator 5?

You don't normally calculate the lcd of a single number (fraction). You would normally take the lcd of two or more fractions. In that case, ONLY the denominators are relevant to find the lcd.


How do you find the sum of two mixed numbers?

To find the sum of two mixed numbers, turn the mixed numbers into improper fractions (multiply the base with the denominator and add the numerator), then add the two fractions. To add the two fractions, find the LCD (lowest common denominator) and add the two numerators, but leave the denominators the same.


What is the importance of reducing fractions to lowest term?

In order to find the LCD when adding or subtracting fractions


What is the LCd of these fractions 1 divided by 2 plus 2 divided by 3 plus 3 divided by x?

1/6 is one fraction. You need at least two fractions to find something in common.