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What is the solution of the inequality \(\frac{2x+1}{5}\le 3\)?

Answer and explanation

Correct answer: \(x\le 7\)

Multiplying both sides by 5 gives \(2x+1\le 15\). Thus, \(2x\le 14\), so \(x\le 7\). Since 5 is positive, the inequality sign remains unchanged. Option B reverses the sign incorrectly, while option C wrongly excludes \(x=7\). In an exam, check whether the multiplier is positive or negative before deciding whether to reverse the inequality sign.

Related tags

Linear InequalitiesOne VariableFractionsAlgebraic SolutionAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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