Question

Tính nhanh ạ

Answer 1

2: \(=\left(\dfrac{-4}{9}-\dfrac{1}{9}-\dfrac{5}{9}\right)+\left(\dfrac{5}{8}+\dfrac{3}{8}\right)+\dfrac{1}{5}=\dfrac{1}{5}-\dfrac{1}{9}=\dfrac{4}{45}\)

4: \(=\dfrac{3}{11}\cdot\dfrac{1}{3}\cdot\dfrac{121}{15}=\dfrac{11}{15}\)

6: \(=\dfrac{6}{7}\left(\dfrac{8}{13}+\dfrac{9}{13}-\dfrac{3}{13}\right)=\dfrac{6}{7}\cdot\dfrac{16}{13}=\dfrac{96}{91}\)

8: \(=\dfrac{9}{25}\cdot\dfrac{-53}{3}-\dfrac{9}{25}\cdot\dfrac{22}{3}=\dfrac{9}{25}\cdot\left(-25\right)=-9\)