The solutions to your problem I believe is 4 and -6.
You need to put the Answers and picture/problem before asking someone to answer it.
Answer:
The property that was used in step 1 was the distributive property.
The property that was used in step 2 was the subtraction property of equality.
The property that was used in step 3 was the division property of equality.
Step-by-step explanation: