Answer :
Given the following expression:
[tex]1\frac{3}{8}-\frac{3}{4}[/tex]To subtract the numbers, we need to convert the mixed number to a fraction number
[tex]1\frac{3}{8}=\frac{8*1+3}{8}=\frac{11}{8}[/tex]And then, we need to make both fractions have the same denominator
The common denominator for 4 and 8 will be 8
[tex]\begin{gathered} \frac{11}{8}=\frac{11}{8} \\ \\ \frac{3}{4}=\frac{3*2}{4*2}=\frac{6}{8} \end{gathered}[/tex]So, the subtraction process will be as follows:
[tex]1\frac{3}{8}-\frac{3}{4}=\frac{11}{8}-\frac{6}{8}=\frac{11-6}{8}=\frac{5}{8}[/tex]So, the answer will be 5/8