We convert the improper fraction to a mixed fraction. Or we find the LCM of both numbers.
LCM of 1 and 2 = 2
[tex]\frac{7-2(1)}{2}[/tex][tex]\begin{gathered} =\frac{7-2}{2} \\ =\frac{5}{2} \end{gathered}[/tex][tex]In\text{ mixed fraction, 5/2 = 2 }\frac{1}{2}\text{ (option B)}[/tex]