You need to know the least common denominator (LCD) of 55 and 82 if you want to add or subtract two fractions with 55 and 82 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 55 and 82 is 4510.
Here is a math problem example where you need to know the LCD of 55 and 82 to solve:
3/55 + 2/82 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
4510/55 = 82
4510/82 = 55
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 82 = 246
2 x 55 = 110
Step 3) Put it all together to solve the problem:
246/4510 + 110/4510 = 356/4510
= 3/55 + 2/82 = 356/4510
It's that easy! Once again, the lowest common denominator (LCD) of 55 and 82 is as follows:
4510
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