Question

tìm x2/5:x=1/3

tính2/5+1/4:3/8

Answer 1

`2/5:x=1/3`

`x=2/5:1/3`

`x=2/5xx3=6/5`

_____________________

`2/5+1/4:3/8=2/5+1/4xx8/3=2/5+2/3=6/15+10/15=16/15`

Answer 2

2/5:x=1/3

      x=2/5:1/3

      x=  6/5

2/5+1/4:3/8

=2/5+2/3

= 16/15

Answer 3

Answer 4

\(x=\dfrac{2}{5}:\dfrac{1}{3}\) 
\(x=\dfrac{2}{5}.3\) 
\(x=\dfrac{6}{5}\) 
b) 
\(\dfrac{2}{5}+\dfrac{1}{4}\) . \(\dfrac{8}{3}\) 
= \(\dfrac{2}{5}+\dfrac{2}{3}\) 
= \(\dfrac{16}{15}\)