What is the Least Common Denominator of 9 and 66?




You need to know the least common denominator (LCD) of 9 and 66 if you want to add or subtract two fractions with 9 and 66 as denominators.

The least common denominator, also called lowest common denominator (LCD), of 9 and 66 is 198.


Here is a math problem example where you need to know the LCD of 9 and 66 to solve:

3/9 + 2/66 = ?

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

198/9 = 22
198/66 = 3

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

3 x 22 = 66
2 x 3 = 6

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

66/198 + 6/198 = 72/198
= 3/9 + 2/66 = 72/198

It's that easy! Once again, the lowest common denominator (LCD) of 9 and 66 is as follows:

198


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