Respuesta:
[tex] \frac{1}{4} \times \frac{2}{7} - \frac{1}{4} = \\ \frac{2}{28} - \frac{1}{4} = \frac{2}{28} - \frac{7}{28} = - \frac{5}{28} [/tex]
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Respuesta:
[tex] \frac{1}{4} \times \frac{2}{7} - \frac{1}{4} = \\ \frac{2}{28} - \frac{1}{4} = \frac{2}{28} - \frac{7}{28} = - \frac{5}{28} [/tex]