You need to know the least common denominator (LCD) of 71 and 2 if you want to add or subtract two fractions with 71 and 2 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 71 and 2 is 142.
Here is a math problem example where you need to know the LCD of 71 and 2 to solve:
3/71 + 2/2 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
142/71 = 2
142/2 = 71
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 2 = 6
2 x 71 = 142
Step 3) Put it all together to solve the problem:
6/142 + 142/142 = 148/142
= 3/71 + 2/2 = 148/142
It's that easy! Once again, the lowest common denominator (LCD) of 71 and 2 is as follows:
142
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