You need to know the least common denominator (LCD) of 2 and 99 if you want to add or subtract two fractions with 2 and 99 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 2 and 99 is 198.
Here is a math problem example where you need to know the LCD of 2 and 99 to solve:
3/2 + 2/99 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
198/2 = 99
198/99 = 2
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 99 = 297
2 x 2 = 4
Step 3) Put it all together to solve the problem:
297/198 + 4/198 = 301/198
= 3/2 + 2/99 = 301/198
It's that easy! Once again, the lowest common denominator (LCD) of 2 and 99 is as follows:
198
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