not sure if you meant [tex]n-\frac{63}{m}[/tex] or [tex]\frac{n-63}{m}[/tex]
if it was the first one then [tex]26-\frac{63}{7}=26-9=17[/tex]
if it was the 2nd one then [tex]\frac{26-63}{7}=\frac{-37}{7}[/tex]
I would assume it is the first one because it simplifies to a nice fraction
