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If (A(x)=24+7x) and (B(x)=48+4x), when will both be equal?

Answer and explanation

Correct answer: \(x=8\)

For the two expressions to be equal, set \(24+7x=48+4x\). Subtracting \(4x\) from both sides gives \(24+3x=48\), so \(3x=24\) and \(x=8\). Therefore, \(x=8\) is correct. For example, at \(x=6\), the two values are not equal. Exam tip: equate the expressions first, then collect like terms on the same side.

Related tags

Linear EquationsPolynomialsAlgebraic ExpressionsEqualityGrade 9 MathematicsLinear Growth And DecayIntroduction To PolynomialsMathematics

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