Hola!
Respuesta:
[tex]a) \frac{1}{8} [/tex]
[tex]b) \frac{21}{10} [/tex]
[tex]c) \frac{35}{16} [/tex]
[tex]d)14[/tex]
Explicación paso a paso:
[tex] \frac{1}{4} \times \frac{3}{5} \times \frac{5}{6} = \frac{1}{4} \times \frac{1}{2} = \frac{1}{8} [/tex]
[tex] \frac{7}{12} \times \frac{4}{5} \times \frac{9}{2} = \frac{7}{4} \times \frac{2}{5} \times 3 = \frac{7}{2} \times \frac{1}{5} \times 3 = \frac{21}{10} [/tex]
[tex] \frac{9}{8} \times \frac{7}{3} \times \frac{5}{6} = \frac{3}{8} \times 7 \times \frac{5}{6} = \frac{1}{8} \times 7 \times \frac{5}{2} = \frac{35}{16} [/tex]
[tex] \frac{6}{5} \times \frac{10}{3} \times \frac{7}{2} = 2 \times 2 \times \frac{7}{2} = 2 \times 7 = 14[/tex]