Question

-7/8:21/16-5/3.(1/5-7/10) mn giúp mình với

Answer 1

\(=\dfrac{-7}{8}\cdot\dfrac{16}{21}-\dfrac{5}{3}\cdot\dfrac{2-7}{10}=\dfrac{-2}{3}+\dfrac{5}{6}=\dfrac{1}{6}\)

Answer 2

\(\dfrac{1}{6}\)

Answer 3

\(\dfrac{1}{6}\)