Question

Прошу помогите дам 35 баллов

Answer 1

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$\tt\displaystyle \frac{2}{3} + ( - \frac{1}{11} ) = \frac{2 \times 11}{3 \times 11} - \frac{1 \times 3}{11 \times 3} = \\ \\ = \frac{22}{33} - \frac{3}{33} = \frac{22 - 3}{33} = \frac{19}{33}$

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