You need to know the least common denominator (LCD) of 63 and 2 if you want to add or subtract two fractions with 63 and 2 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 63 and 2 is 126.
Here is a math problem example where you need to know the LCD of 63 and 2 to solve:
3/63 + 2/2 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
126/63 = 2
126/2 = 63
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 2 = 6
2 x 63 = 126
Step 3) Put it all together to solve the problem:
6/126 + 126/126 = 132/126
= 3/63 + 2/2 = 132/126
It's that easy! Once again, the lowest common denominator (LCD) of 63 and 2 is as follows:
126
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