You need to know the least common denominator (LCD) of 65 and 7 if you want to add or subtract two fractions with 65 and 7 as denominators.
The least common denominator, also called lowest common denominator (LCD), of 65 and 7 is 455.
Here is a math problem example where you need to know the LCD of 65 and 7 to solve:
3/65 + 2/7 = ?
Step 1) Take the LCD and divide each denominator by it as follows:
455/65 = 7
455/7 = 65
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 7 = 21
2 x 65 = 130
Step 3) Put it all together to solve the problem:
21/455 + 130/455 = 151/455
= 3/65 + 2/7 = 151/455
It's that easy! Once again, the lowest common denominator (LCD) of 65 and 7 is as follows:
455
Find Least Common Denominators
Enter another two numbers below to find the Least Common Denominator.