Question

x : 2 + x ; 3 + x : 4 = 25

Answer 1

=>1/2x+1/3x+1/4x=25

=>13/12x=25

=>x=300/13

Answer 2

`x : 2 + x : 3 + x : 4 = 75`

`=> x/2 + x/3 + x/4 = 75`

`=> (6x + 4x + 3x)/12 = 75`

`=> 13x = 75 xx 12`

`=> x = 204/13`

Answer 3

`x : 2 +x : 3 + x : 4 = 25`

`x/2 + x/3 + x/4 = 25`

`=> (6x)/12 + (4x)/12 + (3x)/12 =300/12`

`=> 6x + 4x + 3x = 300`

`=> (6+4+3)x=300`

`=> 13x = 300`

`=> x = 300 : 13`

`=> x = 300/13`

Vậy `x = 300/13`