To find the LCM, write multiples of the three denominators:
2
:
2
,
4
,
6
,
8
,
10
,
12
,
...
4
:
4
,
8
,
12
,
16
,
20
,
...
8
:
8
,
16
,
24
,
32
,
...
The LCM is the smallest multiple that is common to all three:
8
This means the least common denominator is
8
