Question

Choose the property that justifies:
If x= -6, then -6=x

Answer 1

this is identity, as x=-6 and -6=x means the same.

Answer 2

@lalla, the above post is actually incorrect.

If a=b, then b=a is the symmetric property of equality.

It is in the same family as the reflexive property of equality: a = a; and the transitive property of equality: If a = b and b = c, then a = c.