1. 3z + 11 = -28
3z = -39
z = -13
2. 3a - 1 = a + 9
3a - a = 10
2a = 10
a = 5
3. 2 (3p - 4) = 4p + 6
6p - 8 = 4p + 6
6p - 4p = 14
2p = 14
p = 7
4. 1/2x + 4 = 6
1/2x = 2
x = 2 * 2
x = 4
5. 2/3(6x - 9) = 1/4(4x + 12)
4x - 6 = x + 3
4x - x = 9
3x = 9
x = 3
