You need to know the least common denominator (LCD) of 8 and 27 if you want to add or subtract two fractions with 8 and 27 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 8 and 27 is 216.
Here is a math problem example where you need to know the LCD of 8 and 27 to solve:
3/8 + 2/27 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
216/8 = 27
216/27 = 8
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 27 = 81
2 x 8 = 16
Step 3) Put it all together to solve the problem:
81/216 + 16/216 = 97/216
= 3/8 + 2/27 = 97/216
It's that easy! Once again, the lowest common denominator (LCD) of 8 and 27 is as follows:
216
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