1.2z + 11 = -2

2z + 11 = -2
2z = -2 -11
2z = -13
z = -13/2

8 – 4x = 6
-4x = 6 – 8
-4x = -2
x = 2

3a – 2 = -a + 18
3a + a = 18 + 2
4a = 20
a = 5

3 – x = x – 3
-x – x = -3 -3
-2x = -6
x = 3