First, rewrite [tex]\frac{7}{8}[/tex] and [tex]\frac{9}{10}[/tex] so that they have a common denominator.
Then, use [tex]\ \textless \ , =,[/tex] or [tex]\ \textgreater \ [/tex] to order [tex]\frac{7}{8}[/tex] and [tex]\frac{9}{10}[/tex].
[tex]
\frac{7}{8} = \frac{\square}{\square} \quad ; \quad \frac{9}{10} = \frac{\square}{\square}
[/tex]
[tex]
\frac{7}{8} \square \frac{9}{10}
[/tex]