\(\frac{21}{15}=\frac{21:3}{15:3}=\frac{7}{5}\)
\(\frac{11}{121}=\frac{11:11}{121:11}=\frac{1}{2}\)
\(\frac{27}{72}=\frac{27:9}{72:9}=\frac{3}{8}\)
\(\frac{21}{15}=\frac{21:3}{15:3}=\frac{7}{5}\)
\(\frac{11}{121}=\frac{11:11}{121:11}=\frac{1}{11}\)
\(\frac{27}{72}=\frac{27:9}{72:9}=\frac{3}{8}\)
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