You need to know the least common denominator (LCD) of 6 and 27 if you want to add or subtract two fractions with 6 and 27 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 6 and 27 is 54.
Here is a math problem example where you need to know the LCD of 6 and 27 to solve:
3/6 + 2/27 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
54/6 = 9
54/27 = 2
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 9 = 27
2 x 2 = 4
Step 3) Put it all together to solve the problem:
27/54 + 4/54 = 31/54
= 3/6 + 2/27 = 31/54
It's that easy! Once again, the lowest common denominator (LCD) of 6 and 27 is as follows:
54
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