Respuesta:
[tex]( \frac{2}{3} - 1) \div \frac{ - 1}{6} = (\frac{2}{3} - \frac{3}{3} ) \div \frac{ - 1}{6} = \frac{ - 1}{3} \div \frac{ - 1}{6} = \frac{ - 1 \times 6}{3 \times - 1} = \frac{ - 6}{ - 3} = 2[/tex]
[tex] \frac{1}{2} + \frac{1}{3} \times \frac{ - 1}{2} = \frac{1}{2} + \frac{1 \times - 1}{3 \times 2} = \frac{1}{2} + \frac{ - 1}{6} = \frac{3}{6} + \frac{ - 1}{6} = \frac{2}{6} = \frac{1}{3} [/tex]
[tex] \frac{ \frac{3}{5} }{1 - \frac{1}{10} } = \frac{ \frac{3}{5} }{ \frac{10 - 1}{10} } = \frac{ \frac{3}{5} }{ \frac{9}{10 } } = \frac{3}{5} \div \frac{9}{10} = \frac{3 \times 10}{5 \times 9} = \frac{30}{45} = \frac{2}{3} [/tex]
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Respuesta:
[tex]( \frac{2}{3} - 1) \div \frac{ - 1}{6} = (\frac{2}{3} - \frac{3}{3} ) \div \frac{ - 1}{6} = \frac{ - 1}{3} \div \frac{ - 1}{6} = \frac{ - 1 \times 6}{3 \times - 1} = \frac{ - 6}{ - 3} = 2[/tex]
[tex] \frac{1}{2} + \frac{1}{3} \times \frac{ - 1}{2} = \frac{1}{2} + \frac{1 \times - 1}{3 \times 2} = \frac{1}{2} + \frac{ - 1}{6} = \frac{3}{6} + \frac{ - 1}{6} = \frac{2}{6} = \frac{1}{3} [/tex]
[tex] \frac{ \frac{3}{5} }{1 - \frac{1}{10} } = \frac{ \frac{3}{5} }{ \frac{10 - 1}{10} } = \frac{ \frac{3}{5} }{ \frac{9}{10 } } = \frac{3}{5} \div \frac{9}{10} = \frac{3 \times 10}{5 \times 9} = \frac{30}{45} = \frac{2}{3} [/tex]