Đáp án:
Giải thích các bước giải:
\(\begin{array}{l}
+ )\,\,\,\frac{9}{{36}} = \frac{{9:9}}{{36:9}} = \frac{1}{4}\,\,;\,\,\,\frac{1}{4} = \frac{{1 \times 25}}{{4 \times 25}} = \frac{{25}}{{100}}\\
\,\,\,\,\,\,\,\, \Rightarrow \frac{9}{{36}} = \frac{{25}}{{100}}\\
+ )\,\,\,\frac{6}{{15}} = \frac{{6:3}}{{15:3}} = \frac{2}{5}\,\,;\,\,\,\frac{2}{5} = \frac{{2 \times 2}}{{5 \times 2}} = \frac{4}{{10}}\\
\,\,\,\,\,\,\,\, \Rightarrow \frac{6}{{15}} = \frac{4}{{10}}
\end{array}\)
