You need to know the least common denominator (LCD) of 6 and 63 if you want to add or subtract two fractions with 6 and 63 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 6 and 63 is 126.
Here is a math problem example where you need to know the LCD of 6 and 63 to solve:
3/6 + 2/63 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
126/6 = 21
126/63 = 2
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 21 = 63
2 x 2 = 4
Step 3) Put it all together to solve the problem:
63/126 + 4/126 = 67/126
= 3/6 + 2/63 = 67/126
It's that easy! Once again, the lowest common denominator (LCD) of 6 and 63 is as follows:
126
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