C. Division property of equality.
You divide the 3 from x and from the 12, which ends of giving you x = 4.
Process of division.
X+y = -2 is the same as y = -x-2 when you subtract x from both sides
x+y = -2 is the same as 2x+2y = -4 when you multiply both sides by 2
So A, B, and C are the same equation just in a different form.
Answer: Choice D) any of the above
Hello,
Here is your answer:
Here is the proper answer to the question: a=-2.3
a+0.3=-2
-0.3 on both sides
-2+.3=-2.3
A=-2.3
If you need any more help please ask me!
Hope this helps!