You need to know the least common denominator (LCD) of 54 and 4 if you want to add or subtract two fractions with 54 and 4 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 54 and 4 is 108.
Here is a math problem example where you need to know the LCD of 54 and 4 to solve:
3/54 + 2/4 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
108/54 = 2
108/4 = 27
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 2 = 6
2 x 27 = 54
Step 3) Put it all together to solve the problem:
6/108 + 54/108 = 60/108
= 3/54 + 2/4 = 60/108
It's that easy! Once again, the lowest common denominator (LCD) of 54 and 4 is as follows:
108
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