You need to know the least common denominator (LCD) of 9 and 38 if you want to add or subtract two fractions with 9 and 38 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 9 and 38 is 342.
Here is a math problem example where you need to know the LCD of 9 and 38 to solve:
3/9 + 2/38 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
342/9 = 38
342/38 = 9
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 38 = 114
2 x 9 = 18
Step 3) Put it all together to solve the problem:
114/342 + 18/342 = 132/342
= 3/9 + 2/38 = 132/342
It's that easy! Once again, the lowest common denominator (LCD) of 9 and 38 is as follows:
342
Find Least Common Denominators
Enter another two numbers below to find the Least Common Denominator.