What is the Least Common Denominator of 9 and 16?




You need to know the least common denominator (LCD) of 9 and 16 if you want to add or subtract two fractions with 9 and 16 as denominators.

The least common denominator, also called lowest common denominator (LCD), of 9 and 16 is 144.


Here is a math problem example where you need to know the LCD of 9 and 16 to solve:

3/9 + 2/16 = ?

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

144/9 = 16
144/16 = 9

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

3 x 16 = 48
2 x 9 = 18

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

48/144 + 18/144 = 66/144
= 3/9 + 2/16 = 66/144

It's that easy! Once again, the lowest common denominator (LCD) of 9 and 16 is as follows:

144


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