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Solve the inequality (\frac{x}{2}-\frac{x-3}{6}\le 4).

Answer and explanation

Correct answer: \(x\le \frac{21}{2}\)

Multiplying by 6 gives \(3x-(x-3)\le 24\). Thus, \(2x+3\le 24\), so \(2x\le 21\) and \(x\le \frac{21}{2}\). Option B excludes \(\frac{21}{2}\), but this boundary value must be included because the inequality uses \(\le\). Exam tip: multiplying an inequality by a positive LCM clears denominators without reversing the inequality sign.

Related tags

Linear InequalitiesOne VariableFractional InequalitiesAlgebraic SolutionClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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