Part A: Solve the equation 7x + 3x − 18 = 6(x + 3), and show your work. (5 points) Part B: Use this list of properties to justify each step of your math work. Justifications may be used more than once if needed. (5 points) Distributive Property Subtraction Property of Equality Combine Like Terms Multiplication Property of Equality Division Property of Equality Given Addition Property of Equality

see below

Step-by-step explanation:

Given

7x + 3x − 18 = 6(x + 3)

Distribute using the Distributive Property

7x + 3x − 18 = 6x +18

Combine like terms

10x -18 = 6x+18

Subtract 6x from each side Subtraction Property of Equality

10x -6x -18 = 6x +18-6x

Simplify

4x -18 = 18

Add 18 to each side Addition Property of Equality

4x -18+18 = 18+18

Simplify

4x = 36

Divide each side by 4 Division Property of Equality

4x/4 = 36/4

Simplfiy

x =9