Final answer:
The commutative property of addition states that A + B = B + A, but none of the provided options (A, B, C, D) are equivalent to the equation 4 + 5 as the options have different numbers other than 5 and 4.
Step-by-step explanation:
The question asks which equation is equivalent to 4 + 5. According to the commutative property of addition, which states A + B = B + A, the order in which numbers are added does not change the sum. In this case, 4 + 5 is indeed equivalent to 5 + 4. Thus, we are looking for an option that has these two numbers regardless of their order.
Checking the given options, the correct equivalent equation is found in Option B) 6 + 4, which is incorrect due to the numbers being 6 and 4 rather than 5 and 4. The correct option should be 4 + 5 = 5 + 4, but since it is not listed here, none of the options are equivalent to the original equation.