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What is the Least Common Denominator of 9 and 27?




You need to know the least common denominator (LCD) of 9 and 27 if you want to add or subtract two fractions with 9 and 27 as denominators.

The least common denominator, also called lowest common denominator (LCD), of 9 and 27 is 27.


Here is a math problem example where you need to know the LCD of 9 and 27 to solve:

3/9 + 2/27 = ?

Step 1) Take the LCD and divide each denominator by it as follows:

27/9 = 3
27/27 = 1

Step 2) Multiply each nominator with the respective answers from Step 1:

3 x 3 = 9
2 x 1 = 2

Step 3) Put it all together to solve the problem:

9/27 + 2/27 = 11/27
= 3/9 + 2/27 = 11/27

It's that easy! Once again, the lowest common denominator (LCD) of 9 and 27 is as follows:

27


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What is the Least Common Denominator of 9 and 28?
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