Respuesta:
[tex] \frac{1}{2} + \frac{2}{5} = \frac{9}{10 } \\ \frac{3}{4} - \frac{1}{5} = \frac{11}{20} \\ \frac{9}{10} \div \frac{11}{20} = ( 9 \times 20) = 180 \\ (10 \times 11) = 110 \\ \frac{180}{110} = \frac{18}{11} \\ \frac{9}{10} + \frac{5}{2} = \frac{34}{10} = \frac{12}{5} \\ \frac{7}{6} - \frac{1}{8 } = \frac{25}{24} \\ \frac{12}{5} \div \frac{25}{24} = \frac{125}{288} [/tex]
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Respuesta:
[tex] \frac{1}{2} + \frac{2}{5} = \frac{9}{10 } \\ \frac{3}{4} - \frac{1}{5} = \frac{11}{20} \\ \frac{9}{10} \div \frac{11}{20} = ( 9 \times 20) = 180 \\ (10 \times 11) = 110 \\ \frac{180}{110} = \frac{18}{11} \\ \frac{9}{10} + \frac{5}{2} = \frac{34}{10} = \frac{12}{5} \\ \frac{7}{6} - \frac{1}{8 } = \frac{25}{24} \\ \frac{12}{5} \div \frac{25}{24} = \frac{125}{288} [/tex]