commutative property of multiplication states : ab = ba.....what it is basically saying is u can " commute " the numbers....move them around, and it will not change the result. Example : 4 * 3 = 3 * 4....even though u switched them, they will still equal the same number.
so ur answer can be : 4 * 3 = 3 * 4.....or 2(3x + 5) = (3x + 5) * 2....u get the idea, right ?