What is the Least Common Denominator of 9 and 74?




You need to know the least common denominator (LCD) of 9 and 74 if you want to add or subtract two fractions with 9 and 74 as denominators.

The least common denominator, also called lowest common denominator (LCD), of 9 and 74 is 666.


Here is a math problem example where you need to know the LCD of 9 and 74 to solve:

3/9 + 2/74 = ?

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

666/9 = 74
666/74 = 9

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

3 x 74 = 222
2 x 9 = 18

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

222/666 + 18/666 = 240/666
= 3/9 + 2/74 = 240/666

It's that easy! Once again, the lowest common denominator (LCD) of 9 and 74 is as follows:

666


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