Question

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Answer 1

$(a) \: \frac{3}{5} + - \frac{7}{6} + \frac{2}{5} + - \frac{5}{6} \\ \\ = >( \frac{3}{5} + \frac{2}{5} ) - ( \frac{7}{6} + \frac{5}{6} ) \\ \\ = > \frac{5}{5} - \frac{12}{6} \\ \\ = > 1 - 2 = - 1$

$(b) \: \frac{4}{3} + - \frac{4}{5} + - \frac{2}{3} + \frac{7}{2} - 2 \\ \\ = > \frac{4}{3} - \frac{2}{3} + \frac{7}{2} - \frac{4}{5} - 2 \\ \\ = > \frac{2}{3} + \frac{27}{10} - 2 \\ \\ = > \frac{20 + 81 - 60}{30} \\ \\ = > \frac{41}{30}$

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Answer 2

Answer:

refer to the attachment

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