You need to know the least common denominator (LCD) of 3 and 98 if you want to add or subtract two fractions with 3 and 98 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 3 and 98 is 294.
Here is a math problem example where you need to know the LCD of 3 and 98 to solve:
3/3 + 2/98 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
294/3 = 98
294/98 = 3
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 98 = 294
2 x 3 = 6
Step 3) Put it all together to solve the problem:
294/294 + 6/294 = 300/294
= 3/3 + 2/98 = 300/294
It's that easy! Once again, the lowest common denominator (LCD) of 3 and 98 is as follows:
294
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