2/5 x 3/4 x 5/6 x 4/3=2 x 3 x 5 x4/5 x 4 x 6 x3=2/6=1/3
\(\frac{2}{5}\times\frac{3}{4}\times\frac{5}{6}:\frac{3}{4}\)
\(=\frac{2}{5}\times\frac{5}{6}\times\frac{3}{4}:\frac{3}{4}\)
\(=\frac{2}{5}\times\frac{5}{6}\times1\)
\(=\frac{1}{3}\)
2/5x3/4x5/6:3/4=5/6x2/5x3/4:3/4
=2/5x5/6x1
=1/3