Thực hiện các phép tính sau
----- Nội dung dịch tự động từ ảnh -----
Bài 9: Tính:
1) \((- \frac{2}{3} + \frac{3}{7}) \cdot \frac{4}{5} + (-\frac{1}{3} + \frac{4}{7}) \cdot \frac{4}{5};\)
2) \(\frac{5}{9} \cdot (\frac{1}{11} - \frac{5}{22}) + \frac{5}{9} \cdot (\frac{1}{15} - \frac{2}{3});\)
3) \((\frac{1}{7} - \frac{5}{12}) \cdot \frac{4}{5} - (\frac{3}{7} - \frac{17}{12}) \cdot \frac{4}{5};\)
4) \(\frac{29}{19} + \frac{49}{51} - \frac{29}{19} - \frac{34}{51} - \frac{29}{19} + \frac{32}{51};\)
5) \((- \frac{7}{9} + \frac{3}{11}) \cdot \frac{3}{4} - (\frac{2}{19} - \frac{19}{11}) \cdot \frac{3}{4};\)
6) \(4 \cdot \frac{1}{5} + \frac{3}{10} - 4 \cdot \frac{3}{10} + \frac{3}{5} + \frac{3}{8}.\)
Bài 9: Tính:
1) \((- \frac{2}{3} + \frac{3}{7}) \cdot \frac{4}{5} + (-\frac{1}{3} + \frac{4}{7}) \cdot \frac{4}{5};\)
2) \(\frac{5}{9} \cdot (\frac{1}{11} - \frac{5}{22}) + \frac{5}{9} \cdot (\frac{1}{15} - \frac{2}{3});\)
3) \((\frac{1}{7} - \frac{5}{12}) \cdot \frac{4}{5} - (\frac{3}{7} - \frac{17}{12}) \cdot \frac{4}{5};\)
4) \(\frac{29}{19} + \frac{49}{51} - \frac{29}{19} - \frac{34}{51} - \frac{29}{19} + \frac{32}{51};\)
5) \((- \frac{7}{9} + \frac{3}{11}) \cdot \frac{3}{4} - (\frac{2}{19} - \frac{19}{11}) \cdot \frac{3}{4};\)
6) \(4 \cdot \frac{1}{5} + \frac{3}{10} - 4 \cdot \frac{3}{10} + \frac{3}{5} + \frac{3}{8}.\)