Question

Answer 1

`( 3x-1)( 1,5x - 0,5 ) = x( 1-3x)`

`<=> 4,5x^2 - 3x + 0,5 = x - 3x^2`

`<=> 7,5x^2 - 4x + 0,5 = 0`

`<=> 15x^2 - 8x + 1 = 0`

`<=> ( 3x - 1)( 5x - 1 ) = 0`

`<=> 3x-1=0` hoặc `5x-1=0`

`<=> x=1/3` hoặc `x=1/5`

Answer 2

`(3x-1)(1,5x-0,5)=x(1-3x)`

`<=>(3x-1)(1,5x-0,5)-x(1-3x)=0`

`<=>(3x-1)(1,5x-0,5)+x(3x-1)=0`

`<=>(3x-1)(1,5x-0,5+x)=0`

`<=>(3x-1)(2,5x-0,5)=0`

<=> 3x-1=0 hoặc 2,5x-0,5=0

<=> `x=1/3` hoặc x=`1/5`