3/5 x 8/27 x 5/3

= (3/5 x 5/3) x 8/27

= 1 x 8/27

= 8/27

3/5 x 8/27 x 5/3

= (3/5 x 5/3) x 8/27

= 1 x 8/27

= 8/27

Chị huyền ơi cho em xin số được không chị

=3/5*5/3*8/27=1*8/27=8/27

3/5x8/27x5/3

= 3/5x5/3x8/27

= 1 x 8/27

= 8/27

:))))

=3/5*5/3*8/27 

=1*8/27 

=8/27 

=8/27 nhé.

Vì ta gách số đó, gạch 3 và 5 còn ps 8/27

Học tốt!

= ( 3/5 x 5/3 ) x 8/27

= 1x 8/27

=8/27

= 8/27 nha

10/7+9/27+8/14+5/3

=10/7+1/3+4/7+5/3

=(10/7+4/7)+(1/3+5/3)

=14/7+6/3

=2+2

=4

câu hỏi gì khó thế. chẳng thấ quy luật nào car. bó tay. com.vn

Mình chưa học đến

  13/8:5/6:3/5-2/3                      

=13/8x6/5x5/3-2/3

=13/8x[6/5x5/3]-2/3

=13/8x2-2/3

=13/4-2/3

=39/12-8/12

=31/12

= 3/7 nha

tính ra cách đi bạn

(13/17-5/17):8/3

=8/17:8/3

=3/17

=\(\dfrac{13}{17}:\dfrac{8}{3}-\dfrac{5}{17}:\dfrac{8}{3}\)

=\(\left(\dfrac{13}{17}-\dfrac{5}{17}\right):\dfrac{8}{3}\)

=\(\dfrac{8}{17}:\dfrac{8}{3}\)

\(=\dfrac{3}{17}\)

\(\dfrac{13}{17}:\dfrac{8}{3}-\dfrac{5}{17}:\dfrac{8}{3}=\dfrac{13}{17}.\dfrac{3}{8}-\dfrac{5}{17}.\dfrac{3}{8}=\dfrac{3}{8}\left(\dfrac{13}{17}-\dfrac{5}{17}\right)=\dfrac{3}{8}.\dfrac{8}{17}=\dfrac{3}{17}\)

= 3/8 x (5/4 + 3/4)
= 3/8 x 8/4
= 3/8 x 2
= ...........

3/8x[5/4+3/4]

3/8x2

3/4

`(2/3xx4/5)xx5/6`

`=2/3xx4/5xx5/6`

`=2/3xx4/6`

`=2/3xx2/3`

`=1`

__

`(4/5+5/4)xx3/4`

`=(16/20+25/20)xx3/4`

`=41/20xx3/4`

`=123/80`

__

`27/12+17/6-25/36-15/6`

`=(27/12-25/36)+(17/6-15/6)`

`=(81/36-25/36)+2/6`

`=56/36+2/6`

`=56/36+12/36`

`=68/36`

`=17/9`