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What is the interval-form solution of (11-3x>2x+1)?

Answer and explanation

Correct answer: \(( -\infty, 2)\)

Given \(11-3x>2x+1\), subtracting \(1\) from both sides gives \(10-3x>2x\). Adding \(3x\) to both sides gives \(10>5x\), so \(x<2\). Hence, the interval-form solution is \(( -\infty, 2)\). Option C incorrectly includes \(2\); a strict inequality \(>\) does not include the endpoint. Exam tip: use an open bracket at an endpoint for strict inequalities \((<,>)\).

Related tags

Linear InequalitiesOne VariableInterval NotationAlgebraic SolutionClass 11 MathematicsAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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