Question

Tìm số tự nhiên thích hợp của \(x\) sao cho:

\(\dfrac{4}{x}\) \(=\) \(\dfrac{1}{5}\).

Answer 1

\(\dfrac{4}{x}=\dfrac{1}{5}\)

x = \(\dfrac{4\times5}{1}\)= 20

Answer 2

`4/x=1/5`
`=>x=4:1/5`
`=>x=4xx1/5`
`=>x=4/5`
Vậy `x=4/5`

Answer 3

`4/x=1/5`
`=>x=4:1/5`
`=>x=4xx5`
`=>x=20`
Vậy `x=20`

Answer 4

4/x = 1/5

x = 4: 1/5x = 4 x 5x = 20vậy x = 20