Solution:
we have been asked to find that which property justify the given statement.
The given statement is :
If 12 = x + 5, then x + 5 = 12
Here as we can see , that the sides have been changed.
As we know from the symmetric property that if a=b then b=a.
Using the symmetric property we can write, as its written in the given equation
If 12 = x + 5, then x + 5 = 12
Hence the correct option is C.
