Question

Tính :

a ) 2/5 + 4/5 : 5/6 =

b ) 7/3 - 2/3 x 4/5 =

c ) 6/5 : 10 x 5/2 =

d ) 4 : 8/9 + 3/4 =

 

Answer 1

Giúp

Answer 2

a ) 2/5 + 4/5 x 6/5 = 2/5+24/25 = 34/25

b ) 7/3 - 2/3 x 4/5 = 7/3 - 8/15 = 9/5

c ) 6/5 : 10 x 5/2 = 6/5 x 1/10 x 5/2 = 3/10

d ) 4 : 8/9 + 3/4 = 9/2 + 3/4 = 21/4

Answer 3

a ) 34/25

b ) 9/5

c ) 3/10

d ) 21/4

Answer 4

\(â,\dfrac{2}{5}+\dfrac{4}{5}:\dfrac{5}{6}=\dfrac{2}{5}+\dfrac{24}{25}=\dfrac{10}{25}+\dfrac{24}{25}=\dfrac{34}{25}\)

\(b,\dfrac{7}{3}-\dfrac{2}{3}\times\dfrac{4}{5}=\dfrac{7}{3}-\dfrac{8}{15}=\dfrac{35}{15}-\dfrac{8}{15}=\dfrac{27}{15}=\dfrac{9}{5}\)

\(c,\dfrac{6}{5}:10\times\dfrac{5}{2}=\dfrac{3}{10}\)

\(d,4:\dfrac{8}{9}+\dfrac{3}{4}=\dfrac{9}{2}+\dfrac{3}{4}=\dfrac{18}{4}+\dfrac{3}{4}=\dfrac{21}{4}\)

Answer 5

a ) 2/5 + 4/5 x 6/5 = 2/5+24/25 = 34/25

b ) 7/3 - 2/3 x 4/5 = 7/3 - 8/15 = 9/5

c ) 6/5 : 10 x 5/2 = 6/5 x 1/10 x 5/2 = 3/10

d ) 4 : 8/9 + 3/4 = 9/2 + 3/4 = 21/