Respuesta :

[tex]\begin{gathered} \frac{1}{4}\times\frac{3}{5}=\frac{1\times3}{4\times5}=\frac{3}{20} \\ \frac{1}{3}\times11=\frac{1\times11}{3\times1}=\frac{11}{3} \\ \frac{4}{9}\times\frac{3}{8}=\frac{4\times3}{9\times8}=\frac{12}{72}=\frac{1}{6} \end{gathered}[/tex]

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