1.
-4 < 2x + 3 < 3
-7 < 2x < 0
-7/2 < x < 0
2.
7x - 4 >= 10x + 3
-7 >= 3x
x <= -7/3
3.
-x² + 2x - 1 < 0
x² - 2x + 1 > 0
(x - 1)² > 0
x ≠ 1
1.
-4 < 2x + 3 < 3
-7 < 2x < 0
-7/2 < x < 0
2.
7x - 4 >= 10x + 3
-7 >= 3x
x <= -7/3
3.
-x² + 2x - 1 < 0
x² - 2x + 1 > 0
(x - 1)² > 0
x ≠ 1