help please. need done quick question screenshots attached

Answer:
D. The subtraction property of equality was not applied to solve the equation.
Step-by-step explanation:
Step 1: Simplification
Step 2: Addition property of equality
Step 3: Simplification
Step 4: Multiplication property of equality
Step 5: Simplification
The subtraction property of equality was not used here.
Hope this helps! :D