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When 5 is subtracted from twice a number, the result is not less than 3 more than the number. Which inequality and solution are correct?

Answer and explanation

Correct answer: \(2x-5\geq x+3,\ x\geq 8\)

‘Not less than’ means ‘greater than or equal to’, so the inequality is \(2x-5\geq x+3\). Subtracting \(x\) from both sides gives \(x-5\geq 3\), and adding 5 gives \(x\geq 8\). Option B is incorrect because it uses the strict inequality \(>\), which excludes equality. Exam tip: phrases such as ‘at least’ and ‘not less than’ correspond to \(\geq\).

Related tags

Linear InequalitiesWord ProblemsInequality SymbolsGrade 11Algebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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