Question

Answer 1

bài 4 :

a) \(=\dfrac{5}{6}-\dfrac{11}{12}\)\(=\dfrac{-1}{12}\)

b) \(=\dfrac{7}{5}.\dfrac{15}{49}-\dfrac{22}{15}:\dfrac{11}{5}\) \(=\dfrac{3}{7}-\dfrac{2}{3}=\dfrac{-5}{21}\)

c) \(=\dfrac{-16}{5}.\dfrac{15}{64}+\left(\dfrac{4}{5}-\dfrac{34}{15}\right):\dfrac{11}{3}\)\(=\dfrac{-16}{5}.\dfrac{15}{64}+\dfrac{-22}{15}:\dfrac{11}{3}=\dfrac{-3}{4}+\dfrac{-2}{5}=\dfrac{-23}{20}\)

sai mog bạn thông cảm!!!