Final answer:
The property used in the expression is the commutative property of multiplication.
Step-by-step explanation:
The property used in the expression 56x12=12x56 is the commutative property of multiplication. The commutative property states that changing the order of the factors does not change the product. In this case, even though we changed the order of the factors, the product remains the same: 672. This property holds true for all real numbers.
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