=2/3.9/7.4/15+5/7
=6/7.4/15+5/7
=8/35+5/7
=8/35+25/35
=33/35
\(\dfrac{2}{3}:\dfrac{7}{9}\times\dfrac{4}{15}+\dfrac{5}{7}=\dfrac{6}{7}\times\dfrac{4}{15}+\dfrac{5}{7}=\dfrac{8}{35}+\dfrac{5}{7}=\dfrac{33}{35}\)
2/3:7/9x4/15+5/7
\(=\dfrac{2}{3}\times\dfrac{9}{7}\times\dfrac{4}{15}+\dfrac{5}{7}\)
=\(\dfrac{2.9.4}{3.7.15}+\dfrac{5}{7}\)
\(=\dfrac{8}{35}+\dfrac{5}{7}\)
\(=\dfrac{8}{35}+\dfrac{25}{35}\)
\(=\dfrac{33}{35}\)
`2/3:7/9xx4/15+5/7`
`=2/3xx9/7xx4/15+5/7`
`=[2xx3xx3xx4]/[3xx7xx3xx5]+5/7`
`=8/35+5/7`
`=8/35+25/35=33/35`
