tìm x a) X x 5 = 24,65 b) 42 x X = 15,12

`a)`

`x xx 5 = 24,65`

`x = 24,65 : 5`

`x = 4,93`

Vậy `: x = 4,93`

`b)`

`42 xx x = 15,12`

`x = 15,12 : 42` 

`x = 0,36`

Vậy `: x = 0,36`