You need to know the least common denominator (LCD) of 6 and 87 if you want to add or subtract two fractions with 6 and 87 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 6 and 87 is 174.
Here is a math problem example where you need to know the LCD of 6 and 87 to solve:
3/6 + 2/87 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
174/6 = 29
174/87 = 2
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 29 = 87
2 x 2 = 4
Step 3) Put it all together to solve the problem:
87/174 + 4/174 = 91/174
= 3/6 + 2/87 = 91/174
It's that easy! Once again, the lowest common denominator (LCD) of 6 and 87 is as follows:
174
Find Least Common Denominators
Enter another two numbers below to find the Least Common Denominator.