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If (y=96-8x), which value of (x) gives (y=40)?

Answer and explanation

Correct answer: 7

Given (y=96-8x) and (y=40), we get (96-8x=40). Subtracting 96 from both sides gives (-8x=-56), so (x=7). If x=6, then y=48, not 40. Exam tip: When moving or simplifying negative terms, track the signs on both sides carefully.

Related tags

Linear EquationLinear DecaySubstitutionSolving For XPolynomialsLinear Growth And DecayIntroduction To PolynomialsMathematics

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