`1/2x + 1/4 = 1/3`.
`<=> 1/2x = 1/3 - 1/4`.
`<=> 1/2x = 1/12`.
`<=> x = 1/6`.
Vậy `x = 1/6`.
50% x +0,25 =1/3
1/2.x + 0,25 = 1/3
1/2.x = 1/3 - 0.25
1/2.x = 1/3 - 1/4
1/2.x = 1/12
x = 1/12 : 1/2
x = 1/6
50% x +0,25 =1/3
=>1/2x+1/4=1/3
=>1/2x=1/3-1/4=1/12
=>x=1/12:1/2=1/12.2/1=1/6
`1/2x+1/4=1/3`
`<=>1/2x=1/3-1/4`
`<=>1/2x=1/12`
`<=>x=1/2:1/12`
`<=>x=1/6`