\[\begin{array}{l}
+ )\,\,\,\frac{7}{{10}} < \frac{9}{{10}}\,\,\,\left( {do\,\,7 < 9} \right)\\
+ )\,\,\frac{{92}}{{100}} > \frac{{87}}{{100}}\,\,\,\left( {do\,\,92 > 87} \right)\\
+ )\,\,\frac{5}{{10}} = \frac{1}{2};\,\,\,\,\frac{{50}}{{100}} = \frac{1}{2}\\
\Rightarrow \frac{5}{{10}} = \frac{{50}}{{100}}.\\
+ )\,\,\frac{8}{{10}} = \frac{{80}}{{100}} > \frac{{29}}{{100}}\\
\Rightarrow \frac{8}{{10}} > \frac{{29}}{{100}}.
\end{array}\]
