Decomposition of a fraction is defined as the , re-writing of the given fraction as the sum of different fraction with same denominator.
Here we are given with the number [tex] 1\frac{3}{8} [/tex]
This can be decomposed as below:
[tex] 1\frac{3}{8}=1+\frac{1}{8}+\frac{1}{8}+\frac{1}{8}\\ [/tex]
It can be again written in another form as below
[tex] 1\frac{3}{8}=1+\frac{1}{8}+\frac{2}{8} [/tex]