Question

Tìm x biết |2x-1| = |3x+ 2|

Answer 1

Ta có : |2x - 1| = |3x + 2|

<=> 2x - 1 = 3x + 2

       2x - 1 = -(3x + 2)

<=> 2x - 3x = 2 + 1

       2x + 3x = -2 + 1

<=> -x = 3

=> x = -3 

Answer 2

Ta có:

|2x - 1| = |3x + 2|

<=> 2x - 1 = 3x + 2

2x - 1 = -(3x - 2)

<=> 2x - 3x = 2 + 1

2x + 3x = -2 + 1

<=> -x = 3

=> x = -3