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What is the solution set of the inequality \(\frac{5-x}{2}>4\)?

Answer and explanation

Correct answer: \(x<-3\)

Multiplying both sides by 2 gives \(5-x>8\), so \(-x>3\). Multiplying both sides by \(-1\) reverses the inequality sign, yielding \(x<-3\). The option \(x\leq -3\) is incorrect because at \(x=-3\), the left-hand side is \(\frac{5-(-3)}{2}=4\), whereas it must be greater than 4. Exam tip: reverse the inequality sign whenever you multiply or divide by a negative number.

Related tags

Linear InequalitiesInequalities In One VariableAlgebraic SolutionAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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