The mathematical fact that 7+8 = 8+7 is known as what?
The commutative law is a basic property used in mathematics. It states that the order in which you add or multiply two real numbers does not affect the result. Stated symbolically when we add: a + b = b + a and when we multiply: a × b = b × a. From these laws it follows that any finite sum or product is unaltered by reordering its terms or factors. The word commutative is a combination of the French word commuter meaning "to substitute or switch" and the suffix -ative meaning "tending to" so the word literally means "tending to substitute or switch."
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