Question

What's the least common denominator of 3⁄4, 4⁄5, and 2⁄3?

Answer 1

I believe the answer is 60. 

Answer 2

I find it easiest to multiply all the bottom numbers.

$4 \times 5 \times 3 = 60$
60 is the least common denominator of 4, 5, and 3.

Let me know if you find any errors.