Answer:
Down below
Explanation:
1. 2(a + 6) = 18 . Given
2. 2a + 12 = 18. Distributive Property
(because you are distributing the 2)
3. 2a = 6. Subtraction Property.
(because you are subtracting the 12 on both sides)
4. a =3 Division Property.
(because you are dividing by 2 on both sides)