Ответ:
[tex] \frac{7}{9} \div \frac{5}{18} \times \frac{25}{63} \div \frac{4}{99} \times \frac{5}{22} = \frac{7}{9} \times \frac{18}{5} \times \frac{25}{63} \times \frac{99}{4} \times \frac{5}{22 } = \frac{25}{4} [/tex]
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Ответ:
[tex] \frac{7}{9} \div \frac{5}{18} \times \frac{25}{63} \div \frac{4}{99} \times \frac{5}{22} = \frac{7}{9} \times \frac{18}{5} \times \frac{25}{63} \times \frac{99}{4} \times \frac{5}{22 } = \frac{25}{4} [/tex]