Jeg får det samme som AJ, her er udregninger skrevet ud
1. ligning
(x -1) (4x + 2) = (2x + 3) (2 + 2x)
4x^2 + 2x - 4x - 2 = 4x + 4x^2 + 6 + 6x
4x^2 - 2x - 2 = 4x^2 + 10x + 6
4x^2 - 4x^2 - 2x - 10x = 6 + 2
-12x = 8
x = -8/12 = -2/3
2. ligning
(2x - 5) (4 - 3x) = (3x +2) (2 - 2x)
8x - 6x^2 - 20 + 15x = 6x - 6x^2 + 4 - 4x
-6x^2 + 23x - 20 = -6x^2 + 2x + 4
6x^2 - 6x^2 + 23x - 2x = 20 + 4
21x = 24
x = 24/21 = 8/7