f: \(\dfrac{-3}{8}\cdot\dfrac{1}{6}+\dfrac{-3}{8}\cdot\dfrac{5}{6}+\dfrac{-10}{16}\)
\(=\dfrac{-3}{8}\left(\dfrac{1}{6}+\dfrac{5}{6}\right)-\dfrac{10}{16}\)
\(=\dfrac{-6}{16}-\dfrac{10}{16}\)
=-1
g: Ta có: \(\dfrac{-4}{11}\cdot\dfrac{5}{15}\cdot\dfrac{11}{-4}\)
\(=\dfrac{-4}{-4}\cdot\dfrac{11}{11}\cdot\dfrac{1}{3}\)
\(=\dfrac{1}{3}\)
h: Ta có: \(\dfrac{7}{36}+\dfrac{8}{9}-\dfrac{2}{3}\)
\(=\dfrac{7}{36}+\dfrac{32}{36}-\dfrac{24}{36}\)
\(=\dfrac{15}{36}=\dfrac{5}{12}\)
f.\(\dfrac{-3}{8}\).\(\dfrac{1}{6}\)+\(\dfrac{3}{-8}\).\(\dfrac{5}{6}\)+\(\dfrac{-10}{16}\)= \(\dfrac{-3}{8}\)(\(\dfrac{1}{6}\)+\(\dfrac{5}{6}\)) + \(\dfrac{-5}{8}\)
= \(\dfrac{-3}{8}\)+\(\dfrac{-5}{8}\)= -1
g.\(\dfrac{-4}{11}\).\(\dfrac{5}{15}\).\(\dfrac{11}{-4}\)= \(\dfrac{1}{3}\)
h. \(\dfrac{7}{36}\)-\(\dfrac{8}{-9}\)+\(\dfrac{-2}{3}\)=\(\dfrac{7}{36}\)-\(\dfrac{-32}{36}\)+\(\dfrac{-24}{36}\)
=\(\dfrac{5}{12}\)
i. \(\dfrac{4}{7}\)+\(\dfrac{-5}{8}\)-\(\dfrac{3}{28}\)= \(\dfrac{32}{56}\)+\(\dfrac{-35}{56}\)-\(\dfrac{6}{56}\)
=\(\dfrac{-9}{56}\)
l.\(\dfrac{-6}{11}\):(\(\dfrac{3}{5}\).\(\dfrac{4}{11}\))=\(\dfrac{-30}{55}\).\(\dfrac{55}{12}\)
= \(\dfrac{-15}{6}\)
tick mk nha 
