You need to know the least common denominator (LCD) of 9 and 93 if you want to add or subtract two fractions with 9 and 93 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 9 and 93 is 279.
Here is a math problem example where you need to know the LCD of 9 and 93 to solve:
3/9 + 2/93 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
279/9 = 31
279/93 = 3
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 31 = 93
2 x 3 = 6
Step 3) Put it all together to solve the problem:
93/279 + 6/279 = 99/279
= 3/9 + 2/93 = 99/279
It's that easy! Once again, the lowest common denominator (LCD) of 9 and 93 is as follows:
279
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