You need to know the least common denominator (LCD) of 38 and 3 if you want to add or subtract two fractions with 38 and 3 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 38 and 3 is 114.
Here is a math problem example where you need to know the LCD of 38 and 3 to solve:
3/38 + 2/3 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
114/38 = 3
114/3 = 38
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 3 = 9
2 x 38 = 76
Step 3) Put it all together to solve the problem:
9/114 + 76/114 = 85/114
= 3/38 + 2/3 = 85/114
It's that easy! Once again, the lowest common denominator (LCD) of 38 and 3 is as follows:
114
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