How do you find the LCD of 11/6 and 3/10?

2 Answers
May 10, 2017

The LCD is 30.

Explanation:

Find the LCD:

11/6 and 3/10

Write the multiples of each denominator. The lowest multiple that they have in common is the LCD.

6:6,12,18,24,color(red)(30),36,42,48,54,60,66,72...

10:10,20,color(red)(30),40,50,60...

The LCD is 30.

May 10, 2017

Write out the prime factors of the denominators of each fraction and find the product of the greater number of each factor.

Explanation:

LCD is the Lowest Common Denominator

For 11/6 and 3/10:

We are basically finding the lowest common multiple of 6 and 10.
Since 6=2*3 and 10=2*5, then our LCD would need one 2, one 3, and one 5. Therefore, the LCD is 2*3*5=30