Tìm x............gấp

Answer

$\text{Ta có:}$

`30 = 2 . 3 . 5`

`18 = 2 . 3^{2}`

`24 = 2^{3} . 3`

`=> BCN N(30,18,24) = 2^{3} . 3^{2} . 5 = 360`

`=> B(360) = {0 ; 360 ; 720 ; ...}`

$\text{Mà}$ `350 < x < 400`

`=> x = 360`

$\text{Vậy}$ `x = 360`