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What is the solution set of ( \frac{2x+5}{3}\leq 7-\frac{x}{6} )?

Answer and explanation

Correct answer: \(x\leq \frac{32}{5}\)

Multiplying both sides of the inequality by the positive number 6 gives \(4x+10\leq 42-x\). Hence, \(5x\leq 32\), so \(x\leq \frac{32}{5}\). The option \(x<\frac{32}{5}\) is incorrect because equality holds at \(x=\frac{32}{5}\). Exam tip: Multiplying an inequality by a positive number does not reverse its sign.

Related tags

Linear InequalitiesFractional InequalitiesOne VariableAlgebraic SolutionClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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