\(\dfrac{1}{4}\times5\dfrac{1}{3}:\dfrac{-3}{7}\)
\(=\dfrac{1}{4}\times\dfrac{16}{3}:\dfrac{-3}{7}\)
\(=\dfrac{1}{4}\times\dfrac{16}{3}\times\dfrac{-7}{3}\)
\(=\dfrac{1\times16\times\left(-7\right)}{4\times3\times3}\)
\(=-\dfrac{28}{9}\)
=\(\dfrac{1}{4}\)✖\(\dfrac{16}{3}\)(-\(\dfrac{7}{3}\))=✖(-\(\dfrac{7}{3}\))= -\(\dfrac{28}{9}\)
\(\dfrac{1}{4}\) x \(5\dfrac{1}{4}:\dfrac{-3}{7}=\dfrac{1}{4}\) x \(\dfrac{16}{3}:\dfrac{-3}{7}=\dfrac{1}{4}\) x \(\dfrac{16}{3}\) x \(\dfrac{-7}{3}=\dfrac{-112}{36}=\dfrac{-28}{9}\)