Thực hiện phép tính
----- Nội dung dịch tự động từ ảnh -----
**Bài 20: Thực hiện phép tính**
1) \( 7 - \left( \frac{1}{5} - \frac{9}{5} + \frac{4}{3} \right) \)
2) \( 7 + \left( \frac{7}{12} - \frac{1}{2} + 3 - \frac{1}{12} - 5 \right) \)
3) \( \left( \frac{1}{2} - \frac{5}{3} \right) - \left( \frac{7}{5} \right) \)
4) \( \left( \frac{2}{7} - \frac{9}{4} \right) - \left( -\frac{3}{7} + \frac{5}{4} - \left( \frac{2}{9} \right) \right) \)
5) \( \left( 3 - \frac{1}{4} \right) - \left( -\frac{1}{3} - 6 - \frac{7}{2} \right) \)
6) \( \left( 6 - \frac{2}{3} + \frac{1}{2} \right) - \left( 5 + \frac{3}{3} - \frac{2}{\frac{7}{3}} \right) \)
7) \( \left( \frac{5}{3} - 9 \right) - \left( 2 - \frac{5}{7} \right) \cdots \left( \frac{8}{7} - \frac{3}{4} \right) \)
8) \( \left( 8 - \frac{2}{4} - \frac{7}{2} \right) - \left( -\frac{6}{3} - \frac{5}{4} - 3 - 3 - \frac{2}{4} - \frac{9}{7} \right) \)
**Bài 20: Thực hiện phép tính**
1) \( 7 - \left( \frac{1}{5} - \frac{9}{5} + \frac{4}{3} \right) \)
2) \( 7 + \left( \frac{7}{12} - \frac{1}{2} + 3 - \frac{1}{12} - 5 \right) \)
3) \( \left( \frac{1}{2} - \frac{5}{3} \right) - \left( \frac{7}{5} \right) \)
4) \( \left( \frac{2}{7} - \frac{9}{4} \right) - \left( -\frac{3}{7} + \frac{5}{4} - \left( \frac{2}{9} \right) \right) \)
5) \( \left( 3 - \frac{1}{4} \right) - \left( -\frac{1}{3} - 6 - \frac{7}{2} \right) \)
6) \( \left( 6 - \frac{2}{3} + \frac{1}{2} \right) - \left( 5 + \frac{3}{3} - \frac{2}{\frac{7}{3}} \right) \)
7) \( \left( \frac{5}{3} - 9 \right) - \left( 2 - \frac{5}{7} \right) \cdots \left( \frac{8}{7} - \frac{3}{4} \right) \)
8) \( \left( 8 - \frac{2}{4} - \frac{7}{2} \right) - \left( -\frac{6}{3} - \frac{5}{4} - 3 - 3 - \frac{2}{4} - \frac{9}{7} \right) \)