Question

tính rồi rút gọn

2/15 nhân 3/4 nhân 4/1 nhân 5/3

Answer 1

\(2/15 x 3/4 x 4/1 x 5/3 = 2 x 3 x 4 x 5/ 15 x 4 x 1x 3=120/180 = 2/3\)

Answer 2

\(\dfrac{2}{15}\times\dfrac{3}{4}\times\dfrac{4}{1}\times\dfrac{5}{3}=\dfrac{2}{15}\times\dfrac{3}{4}\times4\times\dfrac{5}{3}=\dfrac{2\times3\times4\times5}{15\times4\times3}=\dfrac{120}{180}=\dfrac{2}{3}\)

Answer 3

2/3

Answer 4

2/15 x 3/4 x 4/1 x 5/3 = 120/180 = 2/3

Answer 5

`2/15 xx 3/4 xx 4/1 xx 5/3`

= `(2 xx 3 xx 4 xx 5)/(15 xx 4 xx 1 xx 3)`

= `120/180`

= `2/3`