Example

Simplifying 84n+(73n)+84n-84n + (-73n) + 84n

To simplify the expression 84n+(73n)+84n-84n + (-73n) + 84n, notice that the first and third terms are opposites. First, apply the commutative property of addition to reorder the terms, bringing the opposites together: 84n+84n+(73n)-84n + 84n + (-73n). Next, add the opposites from left to right. By the inverse property of addition, the sum of a number and its opposite is 00, so 84n+84n=0-84n + 84n = 0. This simplifies the expression to 0+(73n)0 + (-73n). Finally, applying the additive identity property, adding 00 to any term leaves it unchanged, resulting in the final simplified expression 73n-73n.

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Updated 2026-05-02

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