Answer:
A) 3x+2=a+6, then a+6=3x+2
Step-by-step explanation:
The symmetric property states that, if x = y, then y = x.
What it means in other word is that, symmetric property is settled when the LHS (left hand side) of an equation equals the RHS (right hand side).
Let's visit the questions now:
Option A, seems most appropriate to the stated rule.
3x+2=a+6, then a+6=3x+2
Also, option D looks like it, but the rotation doesn't meet it.
Hence option A is most CORRECT.