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Find the solution of the inequality \(6-(x+2)\leq 2x-5\).

Answer and explanation

Correct answer: \(x\geq 3\)

Expanding the bracket gives \(6-x-2\leq 2x-5\), or \(4-x\leq 2x-5\). Rearranging the terms yields \(9\leq 3x\). Dividing by the positive number 3 gives \(x\geq 3\), so option B is correct. Option A incorrectly reverses the direction of the inequality. Exam tip: the inequality sign changes only when multiplying or dividing by a negative number.

Related tags

Linear InequalitiesOne Variable InequalitiesAlgebraic SolutionInequality SignsBracket SimplificationAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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