Question

\(\dfrac{2}{7}:\dfrac{2}{3}x8-\dfrac{4}{5}\)

Answer 1

trước số 8 là dấu nhân nha mn

 

Answer 2

\(=\dfrac{2}{7}\cdot\dfrac{3}{2}\cdot8-\dfrac{4}{5}=\dfrac{24}{7}-\dfrac{4}{5}=\dfrac{120-28}{35}=\dfrac{92}{35}\)

Answer 3

=2/7.3/2.8-4/5

=3/7.8-4/5

=24/7-4/5

=120/35-28/35

=82/35

Answer 4

\(\dfrac{2}{7}:\dfrac{2}{3}\times8-\dfrac{4}{5}\\ =\dfrac{3}{7}\times\dfrac{36}{5}\\ =\dfrac{108}{35}\)