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A telecommunications engineer uses the equation 6(2n−1)+3=2n−8+5(2n+1){}6(2n - 1) + 3 = 2n - 8 + 5(2n + 1) to compare two signal strength models, where nn is the number of repeaters. After applying the distributive property and combining like terms, the engineer simplifies the equation to the true statement −3=−3{}-3 = -3. In mathematics, this type of equation that is true for all possible values of the variable is called a(n) ____.

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Updated 2026-09-19

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