Question

What's the property of real numbers that can be flipped, like x * 5 = 5 * x? Communitive?

Answer 1

Yep, Commutative :)

"In mathematics, a binary operation is commutative if changing the order of the operands does not change the result."

Answer 2

The "Commutative Laws" say we can swap numbers over and still get the same answer.