The expression is
.
Find the least common denominator (LCD).
\Multiples of 1: 
Multiples of 2: 
Multiples of 3: 
Multiples of 4: 
The least common multiple of 2, 3 and 4 is 12.
Rewrite each fraction with a common denominator of 24.
\
(LCM is 12)
(Multiply:
)

(Subtract:
)
(Subtract:
)
The simplified expression value is
.