2(x + 6) = 18 a) x = 9 b) x = -6 c) x = -9 d) x = 6. Created by vxschloe.

Step-by-step explanation:[tex]( \frac{1}{2} )(2(x + 6) = 18) \\ x + 6 = 9 \\ x = 9 - 6 \\ x = 3[/tex]