You need to know the least common denominator (LCD) of 3 and 16 if you want to add or subtract two fractions with 3 and 16 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 3 and 16 is 48.
Here is a math problem example where you need to know the LCD of 3 and 16 to solve:
3/3 + 2/16 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
48/3 = 16
48/16 = 3
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 16 = 48
2 x 3 = 6
Step 3) Put it all together to solve the problem:
48/48 + 6/48 = 54/48
= 3/3 + 2/16 = 54/48
It's that easy! Once again, the lowest common denominator (LCD) of 3 and 16 is as follows:
48
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