You need to know the least common denominator (LCD) of 2 and 25 if you want to add or subtract two fractions with 2 and 25 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 2 and 25 is 50.
Here is a math problem example where you need to know the LCD of 2 and 25 to solve:
3/2 + 2/25 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
50/2 = 25
50/25 = 2
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 25 = 75
2 x 2 = 4
Step 3) Put it all together to solve the problem:
75/50 + 4/50 = 79/50
= 3/2 + 2/25 = 79/50
It's that easy! Once again, the lowest common denominator (LCD) of 2 and 25 is as follows:
50
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