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Решите:
[tex]3 \div ( \frac{2}{1} - \frac{1}{2} ) + 5 \div ( \frac{3}{2} - \frac{2}{3} ) + 7 \div ( \frac{4}{3} - \frac{3}{4} ) + ... + 21 \div ( \frac{11}{10} - \frac{10}{11} )[/tex]
Решите:
[tex]3 \div ( \frac{2}{1} - \frac{1}{2} ) + 5 \div ( \frac{3}{2} - \frac{2}{3} ) + 7 \div ( \frac{4}{3} - \frac{3}{4} ) + ... + 21 \div ( \frac{11}{10} - \frac{10}{11} )[/tex]
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