Question

2/3:7/9x4/15+5/7= ghi đầy đủ bài giải nha

Answer 1

=2/3.9/7.4/15+5/7

=6/7.4/15+5/7

=8/35+5/7

=8/35+25/35

=33/35

Answer 2

\(\dfrac{2}{3}:\dfrac{7}{9}\times\dfrac{4}{15}+\dfrac{5}{7}=\dfrac{6}{7}\times\dfrac{4}{15}+\dfrac{5}{7}=\dfrac{8}{35}+\dfrac{5}{7}=\dfrac{33}{35}\)

Answer 3

2/3:7/9x4/15+5/7

\(=\dfrac{2}{3}\times\dfrac{9}{7}\times\dfrac{4}{15}+\dfrac{5}{7}\)

=\(\dfrac{2.9.4}{3.7.15}+\dfrac{5}{7}\)

\(=\dfrac{8}{35}+\dfrac{5}{7}\)

\(=\dfrac{8}{35}+\dfrac{25}{35}\)

\(=\dfrac{33}{35}\)

Answer 4

`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`