Tính
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Bài tập về nhà
Bài 1: Tính
1) \(-\frac{7}{11} + \frac{14}{25} + \frac{25}{11} + \frac{11}{25}\)
2) \(\left(-\frac{1}{6}\right) \cdot \left(-\frac{15}{10}\right) \cdot \frac{38}{45}\)
3) \(\left(\frac{16}{21} + \frac{27}{12}\right) - \left(\frac{14}{12} - \frac{5}{21}\right)\)
4) \( \frac{9}{7} - \left[ \frac{1}{2} - \left(-\frac{2}{7} - \frac{1}{10}\right)\right]\)
5) \(\left(\frac{2}{7} - \frac{9}{4}\right) - \left(-\frac{3}{7} + \frac{5}{4}\right) \cdot \left(-\frac{2}{4} - \frac{9}{7}\right)\)
6) \(\frac{2}{5} + \frac{3}{8} + \frac{5}{8} \cdot \frac{2}{5}\)