Explicación paso a paso:
[tex]( + 3.5) \div ( + 4.2) = \frac{7}{2} \div \frac{21}{5} = \frac{1}{2} \times \frac{5}{3} = \frac{5}{6} = 0.8333 \\ \\ ( - 9.5) \div ( - 1.2) = (- \frac{19}{2} ) \times ( - \frac{6}{5} ) = \frac{19}{2} \times \frac{6}{5} = \frac{95}{12} = 7.9166[/tex]
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Explicación paso a paso:
[tex]( + 3.5) \div ( + 4.2) = \frac{7}{2} \div \frac{21}{5} = \frac{1}{2} \times \frac{5}{3} = \frac{5}{6} = 0.8333 \\ \\ ( - 9.5) \div ( - 1.2) = (- \frac{19}{2} ) \times ( - \frac{6}{5} ) = \frac{19}{2} \times \frac{6}{5} = \frac{95}{12} = 7.9166[/tex]