Final answer:
To write an equivalent expression for 123 x 12 x 124 x 122, rearrange the factors using the commutative property.
Step-by-step explanation:
To write an equivalent expression for 123 x 12 x 124 x 122, we can use the concept of multiplication and the commutative property, which states that changing the order of the factors does not change the product. By rearranging the factors, we can rewrite the expression as 12 x 122 x 123 x 124.