Explicación paso a paso:
[tex]1 - ( \frac{2}{7} + \frac{1}{9} + \frac{3}{8} ) \\ = 1 - ( \frac{72 \times 2 + 56 \times 1 + 63 \times 3}{504} ) \\ = 1 - ( \frac{144 + 56 + 189}{504} ) \\ = 1 - ( \frac{389}{504} ) \\ = \frac{504 - 389}{504} \\ = \frac{115}{504} [/tex]
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Explicación paso a paso:
[tex]1 - ( \frac{2}{7} + \frac{1}{9} + \frac{3}{8} ) \\ = 1 - ( \frac{72 \times 2 + 56 \times 1 + 63 \times 3}{504} ) \\ = 1 - ( \frac{144 + 56 + 189}{504} ) \\ = 1 - ( \frac{389}{504} ) \\ = \frac{504 - 389}{504} \\ = \frac{115}{504} [/tex]