Question

 tính hợp lý nếu có thể

Answer 1

\(=\dfrac{4}{5}\left(\dfrac{-11}{13}+\dfrac{-3}{5}\right)-\dfrac{1}{5}\\ =\dfrac{4}{5}\cdot\dfrac{-94}{65}-\dfrac{1}{5}=\dfrac{-144}{325}\)

Answer 2

\(=\dfrac{4}{5}.\left(\dfrac{-11}{13}+\dfrac{-2}{13}\right)-\dfrac{1}{5}\)

\(=\dfrac{4}{5}.\left(-1\right)-\dfrac{1}{5}\)

\(=\dfrac{-4}{5}-\dfrac{1}{5}\)

\(=-1\)

sai mog bạn thông cảm