Question

Find the least common denominator (LCD) of 7/9 and 5/6

Answer 1

Answer: 18

Explanation:

The least common denominator of
`(7)/(9)` and
`(5)/(6)` is going to be a multiple of 9 and 6. Let us list them out:

9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90

6: 6, 12, 18, 24, 30, 36, 42, 28, 54, 60

You can see I bolded and underlined 18. Why? This is the first common multiple of 9 and 6 so it is our least common denominator (LCD).