Question

a) (-0,25).4/17.(-68/21).(-7/23)

 

Answer 1

\(-\dfrac{1}{4}.\dfrac{4}{17}.\dfrac{-68}{21}.\dfrac{-7}{23}\)

=\(\dfrac{-1}{17}.\dfrac{68}{69}\)

=\(\dfrac{-4}{69}\)

Answer 2

Ta có: \(\dfrac{-1}{4}\cdot\dfrac{4}{17}\cdot\dfrac{-68}{21}\cdot\dfrac{-7}{23}\)

\(=\dfrac{-1}{17}\cdot\dfrac{68\cdot1}{23\cdot3}\)

\(=\dfrac{-4}{69}\)