Question

What number is a common denominator for 3/8and1/3

Answer 1

Hello!

24 is the LCD for 3/8 and 1/3.

The least common multiple is 24, so the LCD is 24, too. A "Common Denominator" is a number that can be divided by all the denominators in a group of fractions.

Answer 2

A common denominator is when the denominators (or the value in the bottom of the fraction) is made the same through multiplication, etc. 

24 is a common denominator for this example:

3/8(3/3) = 9/24
1/3(8/8) = 8/24

9/24 and 8/24 have common denominators, while their numerators are also multiplied, for 'what you do to the bottom, you do to the top' (sorry forgot the exact term for it)


hope this helps