A: -2 < x+9 < 2
-11 < x < -7
4)
.
B: 5x-8 > 12 or 5x-8 < -12
5x > 20 or 5x < -4
x > 4 or x < -4/5
1).
.
C: 3k+4 = 8 or 3k+4 = -8
3k = 4 or 3k = -12
k = 4/3 or k = -4
3).
.
D: x - 6 = -10 or x - 6 = 10
x = -4 or x = 16
5).
.
E: -6x+2 > 4 or -6x+2 < -4
-6x > 2 or -6x < -6
x < -1/3 or x > 1
2).