Question

Answer 1

ko đc viết mỗi kq nha 

Answer 2

d: \(=\dfrac{1}{5}\cdot\dfrac{2-7}{4}-\dfrac{3}{4}\cdot\dfrac{4-11}{12}\)

\(=\dfrac{-1}{4}-\dfrac{7}{16}\)

\(=\dfrac{-4}{16}-\dfrac{7}{16}=-\dfrac{11}{16}\)

f: \(=\dfrac{15}{7}\cdot\dfrac{-1}{10}\cdot\left(-7\right)=\dfrac{15}{10}=\dfrac{3}{2}\)

h: \(=\dfrac{-5}{7}:\dfrac{1-9}{21}\cdot\dfrac{-3}{10}+\dfrac{1}{15}\cdot\dfrac{10}{3}\)

\(=\dfrac{-5}{7}\cdot\dfrac{21}{-8}\cdot\dfrac{-3}{10}+\dfrac{10}{45}\)

\(=-\dfrac{9}{16}+\dfrac{2}{9}=\dfrac{-81+32}{144}=\dfrac{-59}{144}\)