Select the postulate that is illustrated for the real numbers.

3x + 3 = 3 (x + 1)

The commutative postulate for multiplication

Multiplication by one

The addition inverse postulate

Commutative postulate for addition

The distributive postulate

The addition of zero postulate

The multiplication inverse

I think the correct answer from the choices listed above is the distributive postulate. The expression 3x + 3 = 3 (x + 1) is an example of a distributive postulate. It says that multiplying a number by a group of numbers added together is the same as doing each multiplication separately. Hope this answers the question.