You need to know the least common denominator (LCD) of 16 and 4 if you want to add or subtract two fractions with 16 and 4 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 16 and 4 is 16.
Here is a math problem example where you need to know the LCD of 16 and 4 to solve:
3/16 + 2/4 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
16/16 = 1
16/4 = 4
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 1 = 3
2 x 4 = 8
Step 3) Put it all together to solve the problem:
3/16 + 8/16 = 11/16
= 3/16 + 2/4 = 11/16
It's that easy! Once again, the lowest common denominator (LCD) of 16 and 4 is as follows:
16
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