thuyblue149
5/17/2024 12:00:13 AM
Câu 9 (2,0 điểm). Thực hiện phép tính (tính hợp lý nếu có thể):
1. $$\frac{3}{4}$$ + 1$$\frac{2}{3}$$ - $$\frac{7}{9}$$
2. $$\frac{1}{7}$$.$$(\frac{4}{3})^{2}$$ - $$\frac{1}{7}$$ : $$\frac{9}{11}$$
3. (-$$\frac{4}{9}$$ + $$\frac{3}{5}$$) : 1$$\frac{1}{5}$$ + ($$\frac{1}{5}$$ - $$\frac{5}{9}$$) : 1$$\frac{1}{5}$$
4. 0,5.$$\frac{4}{9}$$ + ($$\frac{1}{3}$$ - 1,5)² - $$(\frac{2}{3})^{9}$$ : $$(\frac{2}{3})^{7}$$
