You need to know the least common denominator (LCD) of 82 and 9 if you want to add or subtract two fractions with 82 and 9 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 82 and 9 is 738.
Here is a math problem example where you need to know the LCD of 82 and 9 to solve:
3/82 + 2/9 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
738/82 = 9
738/9 = 82
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 9 = 27
2 x 82 = 164
Step 3) Put it all together to solve the problem:
27/738 + 164/738 = 191/738
= 3/82 + 2/9 = 191/738
It's that easy! Once again, the lowest common denominator (LCD) of 82 and 9 is as follows:
738
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